Task - Control Flow Statements - Conditional Statements - Looping Statements - for loop #86
akash-coded
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TASK -LOOPING STATEMENTS-FOR LOOP1.SumDemo.javaimport java.util.Scanner;
public class SumDemo {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.println("ENTER A NUMBER");
int n=sc.nextInt();
int sum=0;
for(int i=1;i<=n;i++)
{
sum=sum+i;
}
System.out.println("sum of first "+n+" natural number is "+sum);
}
}2.TablesDemo.javaimport java.util.Scanner;
public class TablesDemo {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.println("ENTER THE NUMBER:");
int num=sc.nextInt();
System.out.println("ENTER THE RANGE:");
int n=sc.nextInt();
for(int i=1;i<=n;i++)
{
int tables=i*num;
System.out.println(i+"*"+n+"="+tables);
}
}
}3.FactorialDemo.javaimport java.util.Scanner;
public class FactorialDemo {
public static void main(String[] args) {
int fact = 1,n;
Scanner sc=new Scanner(System.in);
System.out.println("ENTER THE NUMBER:");
n=sc.nextInt();
if(n==0)
{
System.out.println("factorial of 0 is 1");
}
for(int i=1;i<=n;i++)
{
fact=fact*i;
}
System.out.println("factorial of"+" "+n+" "+"is"+" "+fact );
}
}4.ValueDemo.javapackage ControlFlowStatements;
import java.util.Scanner;
public class ValueDemo {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.println("ENTER THE NUM-1:");
int base=sc.nextInt();
System.out.println("ENTER THE NUM-2:");
int exponent=sc.nextInt();
long result = 1;
for(int i=1;i<=exponent;i++)
{
result = result * base;
}
System.out.println("Answer = " + result);
}
}5.CountDemo.javapackage ControlFlowStatements;
import java.util.Scanner;
public class CountDemo {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.println("Enter the string :");
String a=sc.next();
int count=0,i;
char temp;
for(i=0; i<a.length();i++)
{
temp=a.charAt(i);
if(temp=='a')
{
count++;
}
}
System.out.println("No of times a found is "+count);
}
}6.Box.javapackage ControlFlowStatements;
import java.util.Scanner;
public class Box {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.println("Enter the height of the box");
int h=sc.nextInt();
System.out.println("Enter the width of the box");
int w=sc.nextInt();
for(int i=0;i<n;i++)
{
for(int j=0;i<n;j++)
{
System.out.print("# ");
}
System.out.println();
}
}
}7.PasswordDemo.javapackage ControlFlowStatements;
import java.util.Scanner;
public class PasswordDemo {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
final int password=1810;
for(int i=0;i<3;i++)
{
System.out.println("Enter password :");
int passcode=sc.nextInt();
if(passcode==password)
{
System.out.println("Correct !! Welcome Back!");
break;
}
else{
System.out.println("Password incorrect!!");
}
if(i==3)
System.out.println("Sorry!! you have been locked out!!!");
}
}
} |
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1.package forloops;
public class NaturalSum {
public static void main(String[] args) {
int i, s = 0;
for(i=1;i<=10;i++)
{
s += i;
}
System.out.println("Sum of first 10 natural numbers is " + s);
}
}2.package forloops;
import java.util.Scanner;
public class MultipTable {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter a positive unteger");
int n = Integer.parseInt(sc.nextLine());
int i;
for(i=1;i<=10;i++)
{
System.out.println(i + " * " + n + " = " + (i * n));
}
sc.close();
}
}3.package forloops;
import java.util.Scanner;
public class Factori {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter a number");
int n = sc.nextInt();
int f = 1, i;
for(i=1;i<=n;i++)
{
f = f * i;
}
System.out.println("The factorial of " + n + " is " + f);
sc.close();
}
}4.package forloops;
import java.util.Scanner;
public class Power {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter two numbers");
int a = Integer.parseInt(sc.nextLine());
int b = Integer.parseInt(sc.nextLine());
int t = b;
int r = 1;
for(;b!=0;--b)
{
r *= a;
}
System.out.println(String.format("Value of %d power %d is %d", a, t, r));
sc.close();
}
}5.package forloops;
import java.util.Scanner;
public class CharCount {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter a word");
String s = sc.next();
int i, n = s.length();
int c = 0;
for(i=0;i<n;i++)
{
if (s.charAt(i) == 'a') {
c++;
}
}
System.out.println(String.format("The character 'a' apperrs %d times in the word %s", c, s));
sc.close();
}
}6.package forloops;
import java.util.Scanner;
public class PrintBox {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter height and width values");
int h = Integer.parseInt(sc.nextLine());
int w = Integer.parseInt(sc.nextLine());
int i, j;
for(i=0;i<h;i++)
{
for(j=0;j<w;j++)
{
System.out.print("# ");
}
System.out.println();
}
sc.close();
}
}7.package forloops;
import java.util.Scanner;
public class Password {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
final int p = 1234;
int i;
int uspin = 0;
for(i=0;i<3;i++)
{
System.out.println("Enter pin number");
uspin = Integer.parseInt(sc.nextLine());
if (uspin == p) {
System.out.println("Correct, welcome back");
break;
}
if (i == 0 || i == 1) {
System.out.println("Incorrect, try again");
}
if (i == 2) {
System.out.println("Sorry but you have been locked out.");
}
}
sc.close();
}
} |
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1public class Natural {
public static void main(String[] args){
int num,sum=0;
for(num=1;num<=10;num++){
sum=sum+num;
}
System.out.println("The sum of first 10 Natural numbers is:"+sum);
}
}2import java.util.Scanner;
public class Multiplication {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("Enter the multiplication table");
int table=scanner.nextInt();
int num;
for(num=1;num<=10;num++){
int multiplication=num*table;
System.out.println(String.format("The multplication table of %d is:",table)+multiplication);
}
}
}3import java.util.Scanner;
public class Factorial {
public static void main(String[] args){
Scanner scanner = new Scanner(System.in);
System.out.println("Enter the number");
int num=scanner.nextInt();
int a=1,fact=1;
for(a=1;a<=num;a++){
fact=fact*a;
}
System.out.println("The fatorial of number is :"+fact);
}
}
4import java .util.Scanner;
public class Power {
public static void main(String[] args){
Scanner scanner = new Scanner(System.in);
System.out.println("Enter the base");
int base=scanner.nextInt();
System.out.println("Enter the exponent ");
int exponent=scanner.nextInt();
int power=1,a;
for(a=1;a<=exponent;a++){
power=power*base;
}
System.out.println("The Power of number is: "+power);
}
}5import java.util.Scanner;
public class NumberOfTimes {
public static void main(String[] args){
Scanner sc=new Scanner(System.in);
System.out.println("Enter any word:");
String word=sc.nextLine();
char[] array=word.toCharArray();
int len=array.length;
System.out.println("len: " + len);
int i,count=0;
for(i=0;i<len;i++){
if(array[i]=='a'){
count++;
}
}
System.out.println("The count of a is: " + count);
}
}6import java.util.Scanner;
public class BoxSymbols {
public static void main(String[] args){
Scanner scanner = new Scanner(System.in);
System.out.println("Enter the height");
int height = scanner.nextInt();
System.out.println("Enter the width");
int width = scanner.nextInt();
int a;
for(;height>0;height--){
for(a=width;a>0;a--){
System.out.print("#");
}
System.out.print("\n");
}
}
}7import java.util.Scanner;
class PinNumber {
public static void main(String[] args){
Scanner scanner = new Scanner(System.in);
int pin=123;
int count=1;
for(;true;){
System.out.println("Enter pin number");
int pinNumber = scanner.nextInt();
if(pinNumber==pin){
System.out.println("PinNumber is Correct, welcome back");
break;
}
else
if(count>=3){
System.out.println("Sorry,you have been locked out");
break;
}
else{
System.out.println("Incorrect pin,try again");
count++;
}
}
}
}
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1.forloop1.javapublic class forloop1 {
public static void main(String args[])
{
int i=1,sum=0;
for(i=1;i<=10;i++)
{
sum=sum+i;
}
System.out.print(String.format("sum = %d",sum));
}
}Output
2forloop2.javaimport java.util.Scanner;
public class forloop2 {
public static void main(String args[])
{
int n,i;
Scanner sc=new Scanner(System.in);
System.out.print("Enter the number: ");
n=Integer.parseInt(sc.nextLine());
if(n>0)
{
for(i=1;i<=12;i++)
{
System.out.println(String.format("%d x %d = %d",n,i,(n*i)));
}
}
sc.close();
}
}Output
3.forloop3.javaimport java.util.Scanner;
public class forloop3 {
public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
System.out.print("Enter the number: ");
int n=Integer.parseInt(sc.nextLine());
int result=1;
for(int i=n;i>=1;i--)
{
result=result*i;
}
System.out.println(String.format("The factorial of %d is %d",n,result));
sc.close();
}
}Output
4forloop4.javaimport java.util.Scanner;
public class forloop4 {
public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
System.out.print("Enter the value 1: ");
int a=Integer.parseInt(sc.nextLine());
System.out.print("Enter the value 2: ");
int b=Integer.parseInt(sc.nextLine());
int result=1;
for(int i=1;i<=b;i++)
{
result=result*a;
}
System.out.println(String.format("%d to the power of %d = %d",a,b,result));
sc.close();
}
}Output
5forloop5.javaimport java.util.Scanner;
public class forloop5 {
public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
String n;
System.out.print("Enter the String: ");
n=sc.nextLine();
char ch[]=n.toCharArray();//convert from string to array
int i=1;
try
{
for(i=0;ch[i]!='\0';i++){}//to find the length of the string
}
catch (Exception e){}
int a=0;
for(int j=0;j<i;j++)
{
if(ch[j] == 'a' || ch[j] == 'A')
{
a++;//gets the number of a in String which has been converted to Char
}
}
System.out.print(String.format("a repeats %d times in %s",a,n));
sc.close();
}
}Output
6forloop6.javaimport java.util.Scanner;
public class forloop6
{
public static void main(String[] args)
{
Scanner sc=new Scanner(System.in);
int height,width;
System.out.print("Enter the height of: ");
height=Integer.parseInt(sc.nextLine());
System.out.print("Enter the height of: ");
width=Integer.parseInt(sc.nextLine());
for(int i=1;i<=height;i++)
{
for(int j=1;j<=width;j++)
{
System.out.print("# ");
}
System.out.println();
}
sc.close();
}
}Output
7forloop7.javaimport java.util.Scanner;
public class forloop7
{
public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
final int pin=1589;
for(int i=3;i>=1;i--)
{
System.out.print("Enter the pin number: ");
int pin1=Integer.parseInt(sc.nextLine());
if(pin1==pin)
{
System.out.println("Correct, welcome back.");
break;
}
else if(i==0)
{
System.out.println("Sorry but you have been locked out.");
}
else
{
System.out.println("Incorrect, try again.");
}
}
sc.close();
}
}Output
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1.public class MainClass
{
public static void main(String args[]) {
int sum = 0;
for (int number = 1;number <=10;number++) {;
sum = sum + number;
}
System.out.println("Sum = " + sum);
}
}2.import java.util.Scanner;
public class MainClass
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
System.out.print("Enter number:");
int n=Integer.parseInt(sc.nextLine());
for(int i=1;i<=10;i++){
System.out.println(n+" * "+i+" = "+n*i);
}
}
}3.import java.util.Scanner;
class MainClass{
public static void main(String args[]){
Scanner sc = new Scanner(System.in);
int fact=1;
System.out.print("Enter Number : ");
int number=Integer.parseInt(sc.nextLine());;
for(int i=1;i<=number;i++){
fact=fact*i;
}
System.out.println("Factorial of "+number+" is: "+fact);
}
} 4.import java.util.Scanner;
public class MainClass {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.print("ENTER THE NO : ");
int n1 = Integer.parseInt(sc.nextLine());
System.out.print("ENTER THE POWER FOR THAT NO :");
int n2 = Integer.parseInt(sc.nextLine());
int power = 1;
if (n2 >= 1) {
for( int i = 1;i <= n2;i++){
power = power * n1;
}
System.out.println("Power of " + n1 + " is "+power);
}
}
}5.import java.util.Scanner;
public class MainClass
{
public static void main(String args[])
{
Scanner sc = new Scanner(System.in);
System.out.print("Enter String : ");
String input = sc.nextLine();
char search = 'a';
int count=0;
for(int i=0;i<input.length();i++){
if(input.charAt(i) == search)
count++;
}
System.out.println("The Character '"+search+"' appears "+count+" times.");
}
}6.import java.util.Scanner;
class MainClass {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
System.out.print("Enter Height of the box : ");
int height = Integer.parseInt(sc.nextLine());
System.out.print("Enter width of the box : ");
int width = Integer.parseInt(sc.nextLine());
for(int outerLoop = 1;outerLoop <= height;outerLoop++) {
System.out.print("#");
for( int innerLoop = 0;innerLoop <= width-2; innerLoop++) {
System.out.print("#");
}
System.out.println();
}
}
}
7.import java.util.Scanner;
class MainClass {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
System.out.print("Please enter pin : ");
int pin = Integer.parseInt(sc.nextLine());
for(int i=0;i<3;i++) {
if(pin == 1234){
System.out.println("Correct,Welcome Back");
break;
}
else{
if(i<2){
System.out.println("Incorrect, Please try again..");
System.out.print("Please enter pin : ");
pin = Integer.parseInt(sc.nextLine());
}
else{
System.out.print("Sorry, but you have been locked out");
}
}
}
}
} |
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1.package Operators.ControlFlow.WhileLoop.ForLoop;
public class NaturalNum {
public static void main(String[] args) {
int i;
int sum=0;
for(i=1;i<=10;i++){
sum+=i;
}
System.out.println("Sum of 10 Natural Number is " + sum);
}
}2.package Operators.ControlFlow.WhileLoop.ForLoop;
import java.util.Scanner;
public class Multiplication {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.println("Enter the number: ");
int a=Integer.parseInt(sc.nextLine());
for(int i=1;i<=10;i++){
System.out.printf("%d*%d=%d \n",a,i,a*i);
}
sc.close();
}
}3.package Operators.ControlFlow.WhileLoop.ForLoop;
import java.util.Scanner;
public class Factorial {
public static void main(String[] args) {
int fact=1;
Scanner sc=new Scanner(System.in);
System.out.println("Enter the number: ");
int a=Integer.parseInt(sc.nextLine());
for(int i=a;i!=0;i--){
fact*=i;
}
System.out.println("The factorial of a number is: "+fact);
sc.close();
}
}4.package Operators.ControlFlow.WhileLoop.ForLoop;
import java.util.Scanner;
public class Power {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int result=1;
System.out.println("Enter number 1:");
int a=Integer.parseInt(sc.nextLine());
System.out.println("Enter Number 2:");
int b=Integer.parseInt(sc.nextLine());
for(;b>0;b--){
result*=a;
}
System.out.println("The result is: "+result);
sc.close();
}
}5.package Operators.ControlFlow.WhileLoop.ForLoop;
import java.util.Scanner;
public class CharCount {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int count=0;
System.out.println("Enter the String: ");
String a=sc.nextLine();
char b[]=a.toCharArray();
int i=0;
for(;i<a.length();i++) {
if(b[i]=='a')
count++;
}
System.out.println("The count of 'a' is: "+count);
sc.close();
}
}6.package Operators.ControlFlow.WhileLoop.ForLoop;
import java.util.Scanner;
public class Box {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.println("Enter the height of the box: ");
int h=Integer.parseInt(sc.nextLine());
System.out.println("Enter the width of the box: ");
int w=Integer.parseInt(sc.nextLine());
int i=0,j;
for(;i<h;i++) {
j=0;
for(;j<w;j++){
System.out.print("# ");
}
System.out.print("\n");
}
sc.close();
}
}7.package Operators.ControlFlow.WhileLoop.ForLoop;
import java.util.Scanner;
public class Password {
public static void main(String[] args) {
final String passcode="pass1234";
int count=0;
Scanner sc=new Scanner(System.in);
for(;count<3;count++){
System.out.println("Enter the login pin");
String pin=sc.nextLine();
if(pin.equals(passcode)){
System.out.println("Correct, welcome back.");
break;
}
else{
System.out.println("Incorrect, try again.");
}
}
sc.close();
}
} |
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Looping statements-for loop1.Natural Numberspackage module.controlstmntfor;
public class NaturalNumbers {
public static void main(String[] args) {
int sum=0;
for (int i=1;i<=10;i++){
sum+=i;
}
System.out.println("Sum of first 10 natural numbers is "+sum);
}
}2.Tablespackage module.controlstmntfor;
import java.util.Scanner;
public class TablePositive2 {
public static void main(String[] args){
Scanner sc=new Scanner(System.in);
System.out.println("Enter the number :");
int num=sc.nextInt();
if(num>0){
for(int i=1;i<=10;i++){
System.out.printf("%d * %d = %d\n",num,i,num*i);
}
}
}}3.Factorialpackage module.controlstmntfor;
import java.util.Scanner;
public class Factorial2 {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.println("Enter the number");
int num=sc.nextInt();
int fact=1;
for(int i=1;i<=num;i++){
fact=fact*i;
}
System.out.println("Factorial of "+num+ " is "+fact);
}
}4.Powerpackage module.controlstmntfor;
import java.util.Scanner;
public class PowerPrgm2 {
public static void main(String[] args) {
Scanner sc= new Scanner (System.in);
System.out.println("Enter the number ");
int n1=sc.nextInt();
int n2=sc.nextInt();
int power=1;
for(int i=1;i<=n2;i++){
power = power * n1;
}
System.out.println(power);
}
}5 Character countpackage module.controlstmntfor;
import java.util.Scanner;
public class CharacterDemo2 {
public static void main(String[] args){
Scanner sc=new Scanner(System.in);
System.out.println("Enter the character");
String a=sc.nextLine();
int count=0;
for(int j=0;j<a.length();j++){
if(a.charAt(j)=='a')
count++;
}
System.out.println(count);
}
}
6.HeightWidthpackage module.controlstmntfor;
import java.util.Scanner;
public class HeightWidth2 {
public static void main(String[] args){
Scanner sc=new Scanner(System.in);
int height=sc.nextInt();
int width=sc.nextInt();
int t1=height;
int t2=width;
for( ;t1>0;t1--)
{
for( ;t2>0;t2--){
System.out.print("# ");
}
System.out.println(" ");
t2 = width;
}
}
}
7.PINpackage module.controlstmntfor;
import java.util.Scanner;
public class PinProgm2 {
public static void main(String[] args){
Scanner sc=new Scanner(System.in);
final int password=3456;
int count=0;
for( ;count<3;count++){
System.out.println("Enter the pin");
int pin=sc.nextInt();
if(pin==password){
System.out.println("correct,welcome back.");
break;}
else{
System.out.println("incorrect,try again");
} }
if(count==3)
System.out.println("sorry but you have been locked out");
}
}
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1public class Ques1 {
public static void main(String[] args) {
int sum=0;
for(int n=0;n<=10;n++){
sum+=n;
}
System.out.println("Sum of 10 Natural Number is " + sum);
}
}2import java.util.Scanner;
public class Ques2 {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.println("Enter the number: ");
int a=sc.nextInt();
for(int i=0;i<=10;i++){
System.out.printf("%d*%d=%d \n",a,i,a*i);
}
sc.close();
}
}3import java.util.Scanner;
public class Ques3 {
public static void main(String[] args) {
int fact;
Scanner sc=new Scanner(System.in);
System.out.println("Enter the number: ");
int a=sc.nextInt();
for(fact=1;a!=0;a--){
fact*=a;
}
System.out.println("The factorial of a number is: "+fact);
sc.close();
}
}4import java.util.Scanner;
public class Ques4 {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int res;
System.out.println("Enter number 1:");
int a=sc.nextInt();
System.out.println("Enter Number 2:");
int b=sc.nextInt();
for(res=1;b>0;b--){
res*=a;
}
System.out.println(res);
sc.close();
}
}5import java.util.Scanner;
public class Ques5 {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int count=0;
System.out.println("Enter the String: ");
String s=sc.nextLine();
char b[]=s.toCharArray();
for(int i=0;i<s.length();i++) {
if(b[i]=='a'){
count++;
}
}
System.out.printf("The count of 'a' is: %d",count);
sc.close();
}
}6import java.util.Scanner;
public class Ques6{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.println("Enter the height of the box: ");
int he=Integer.parseInt(sc.nextLine());
System.out.println("Enter the width of the box: ");
int wi=Integer.parseInt(sc.nextLine());
for(int i=0;i<he;i++){
for(int j=0;j<wi;j++){
System.out.print("# ");
}
System.out.print("\n");
}
sc.close();
}
}7import java.util.Scanner;
public class Ques7 {
public static void main(String[] args) {
final String passcode="Pass123";
Scanner sc=new Scanner(System.in);
for(int count=0;count<3;count++){
System.out.println("Enter the login pin");
String pin=sc.nextLine();
if(pin.equals(passcode)){
System.out.println(" Welcome back.");
break;
}
else if(count==2){
System.out.println("Try Later...");
}
else{
System.out.println("Incorrect pin , try again.");
}
}sc.close();
}
} |
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1 Sum of the first 10 natural numbersimport java.util.*;
public class ForNatural {
public static void main(String[] args) {
int sum=0;
for(int i=1;i<=10;i++)
{
sum=sum+i;
}
System.out.println("sum of first 10 natural number is "+sum);
}
}2 Multiplication table of that numberimport java.util.*;
public class ForTables{
public static void main(String[] args){
Scanner scanner = new Scanner(System.in);
System.out.println("Enter a positive number : ");
int num = scanner.nextInt();
for(int i=1; i<=10;i++){
System.out.printf("%d*%d=%d\n",num,i,(i*num));
}
}
}3 Factorialimport java.util.*;
public class ForFact{
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter a number : ");
int num = sc.nextInt();
int fact = 1;
for(int i=1;i<=num;i++)
{
fact = fact * i;
}
System.out.println("The factorial of a number is " + fact);
}
}4 Powerimport java.util.*;
public class ForPower {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter a : ");
int a = sc.nextInt();
System.out.println("Enter b : ");
int b = sc.nextInt();
int res = 1;
if (b >= 1) {
for( int i = 1; i <= b; i++){
res = res * a;
}
System.out.println("Power : "+res);
}
}
}5 Characterimport java.util.*;
public class ForChar {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter a word : ");
String word = sc.next();
int s = word.length();
int ch = 0;
for(int i=0;i<s;i++)
{
if (word.charAt(i) == 'a') {
ch++;
}
}
System.out.printf("'a' appears %d times in the word %s", ch, word);
}
}6 Boximport java.util.Scanner;
public class ForBox{
public static void main(String[] args)
{
Scanner sc=new Scanner(System.in);
int height,width;
System.out.print("Enter the height : ");
height=Integer.parseInt(sc.nextLine());
System.out.print("Enter the width : ");
width=Integer.parseInt(sc.nextLine());
for(int i=1;i<=height;i++)
{
for(int j=1;j<=width;j++)
{
System.out.print("# ");
}
System.out.println();
}
sc.close();
}
}7 Pinimport java.util.*;
class ForPin {
public static void main(String[] args){
Scanner scanner = new Scanner(System.in);
int password=123;
int count=1;
for(;true;){
System.out.println("Enter pin number");
int pin = scanner.nextInt();
if(pin==password){
System.out.println("PinNumber is Correct, welcome back");
break;
}
else
if(count>=3){
System.out.println("Sorry,you have been locked out");
break;
}
else{
System.out.println("Incorrect pin,try again");
count++;
}
}
}
} |
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1public class Examples
{
public static void main(String args[]) {
int sum = 0;
for (int number = 1;number <=10;number++) {;
sum = sum + number;
}
System.out.println("Sum = " + sum);
}
}2import java.util.Scanner;
public class Examples
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
System.out.print("Enter number:");
int n=Integer.parseInt(sc.nextLine());
for(int i=1;i<=10;i++){
System.out.println(n+" * "+i+" = "+n*i);
}
}
}3import java.util.Scanner;
class Examples{
public static void main(String args[]){
Scanner sc = new Scanner(System.in);
int fact=1;
System.out.print("Enter Number : ");
int number=Integer.parseInt(sc.nextLine());;
for(int i=1;i<=number;i++){
fact=fact*i;
}
System.out.println("Factorial of "+number+" is: "+fact);
}
} 4import java.util.Scanner;
public class Examples {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.print("ENTER THE NO : ");
int n1 = Integer.parseInt(sc.nextLine());
System.out.print("ENTER THE POWER FOR THAT NO :");
int n2 = Integer.parseInt(sc.nextLine());
int power = 1;
if (n2 >= 1) {
for( int i = 1;i <= n2;i++){
power = power * n1;
}
System.out.println("Power of " + n1 + " is "+power);
}
}
}5import java.util.Scanner;
public class Examples
{
public static void main(String args[])
{
Scanner sc = new Scanner(System.in);
System.out.print("Enter String : ");
String input = sc.nextLine();
char search = 'a';
int count=0;
for(int i=0;i<input.length();i++){
if(input.charAt(i) == search)
count++;
}
System.out.println("The Character '"+search+"' appears "+count+" times.");
}
}6import java.util.Scanner;
class Examples {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
System.out.print("Enter Height of the box : ");
int height = Integer.parseInt(sc.nextLine());
System.out.print("Enter width of the box : ");
int width = Integer.parseInt(sc.nextLine());
for(int outerLoop = 1;outerLoop <= height;outerLoop++) {
System.out.print("#");
for( int innerLoop = 0;innerLoop <= width-2; innerLoop++) {
System.out.print("#");
}
System.out.println();
}
}
}7import java.util.Scanner;
class Examples {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
System.out.print("Please enter pin : ");
int pin = Integer.parseInt(sc.nextLine());
for(int i=0;i<3;i++) {
if(pin == 1234){
System.out.println("Correct,Welcome Back");
break;
}
else{
if(i<2){
System.out.println("Incorrect, Please try again..");
System.out.print("Please enter pin : ");
pin = Integer.parseInt(sc.nextLine());
}
else{
System.out.print("Sorry, but you have been locked out");
}
}
}
}
} |
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1//Write a program to calculate the sum of the first 10 natural numbers.
public class For1 {
public static void main(String[] args) {
int sum = 0;
for(int i=1;i<=10;i++){
sum+=i;
}
System.out.println("Sum of first 10 numbers is"+sum);
}
}2import java.util.Scanner;
/*Write a program that prompts the user to input a positive integer. It should then print the multiplication table of that number. */
public class For2 {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("Enter the positive integer");
int positiveInteger = scanner.nextInt();
for(int i = 1; i <= 10; i++) {
System.out.printf(" \n %d * %d = %d", positiveInteger, i,i* positiveInteger);
}
}
}3/*Write a program to find the factorial value of any number entered through the keyboard. Example: factorial 4 = 4 * 3 * 2 * 1 = 24*/
import java.util.Scanner;
public class For3 {
public static void main(String[] args) {
int fact=1;
Scanner sc = new Scanner(System.in);
int n= sc.nextInt();
for (int i=1;i<=n;i++) {
fact*=i;
}
System.out.println(fact);
sc.close();
}
}4import java.util.Scanner;
public class For4 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int num1= sc.nextInt();
int num2=sc.nextInt();
int power;
for( power=1;num2>0;num2--){
power*=num1;
}
System.out.printf("The Power is"+ power);
}
}5import java.util.Scanner;
public class For5 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter a word");
String s = sc.next();
int i, n = s.length();
int c = 0;
for(i=0;i<n;i++)
{
if (s.charAt(i) == 'a') {
c++;
}
}
System.out.println(String.format("The character 'a' appears %d times in the word %s", c, s));
sc.close();
}
}6public class For6{
public static void main(String[] args)
{
Scanner sc=new Scanner(System.in);
int height,width;
System.out.print("Enter the height : ");
height=Integer.parseInt(sc.nextLine());
System.out.print("Enter the width : ");
width=Integer.parseInt(sc.nextLine());
for(int i=1;i<=height;i++)
{
for(int j=1;j<=width;j++)
{
System.out.print("# ");
}
System.out.println();
}
sc.close();
}
}7import java.util.Scanner;
public class For7 {
public static void main(String[] args){
Scanner sc=new Scanner(System.in);
final int password=3456;
int count=0;
for( ;count<3;count++){
System.out.println("Enter the pin");
int pin=sc.nextInt();
if(pin==password){
System.out.println("correct,welcome back.");
break;}
else{
System.out.println("incorrect pin");
} }
if(count==3)
System.out.println(" you have been locked out");
}
} |
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1.public class NaturalNumbers {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter a numbers :: ");
int i = sc.nextInt();
int sum = 0;
for (int j = 1; j <= i; j++) {
sum += j;
}
System.out.println("sum = " + sum);
}
}2public class PositiveInteger {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.print("Enter number:");
int n = sc.nextInt();
for (int i=1; i<=n; i++) {
System.out.println(n+" * "+i+" = "+n*i);
}
}
}3public class Factorial {
public static void main(String[] args) {
int fact =1;
Scanner sc = new Scanner(System.in);
System.out.println("Enter a number :: ");
int num = sc.nextInt();
for(int i = 1; i <=num; i++) {
fact = fact * i;
}
System.out.println("Factorial of the given number is :: " + fact);
}
}4public class Power {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("Enter the base value :: ");
int base = scanner.nextInt();
System.out.println("Enter the exponent value :: ");
int exponent = scanner.nextInt();
int res = 1;
for (int i = 1; i <= exponent; i++) {
res *= base;
}
System.out.println("The power is :: " + res);
}
}5public class Occurences {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter the string :: ");
String str = sc.nextLine();
char ch = 'a';
int count = 0;
for (int i=0; i<str.length(); i++) {
if(str.charAt(i) == ch) { count++; }
}
System.out.println("The character 'a' appears " + count + " times");
}
}6public class Box {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter the value of height :: ");
int h = sc.nextInt();
System.out.println("Enter the value of width :: ");
int w = sc.nextInt();
for(int i=0;i<h;i++) {
for(int j=0;j<w;j++) {
System.out.print("# ");
}
System.out.print("\n");
}
}
}7public class Pin {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
final int pin = 123;
int count = 1;
for (int i = 1; i <=3; ++i) {
System.out.println("Enter your pin number :: ");
int userpin = sc.nextInt();
if (userpin == pin) {
System.out.println("Correct, welcome back.");
break;
} else {
if (i >= 3) {
System.out.println("Sorry but you have been locked out.");
break;
}
else {
System.out.println("Incorrect, try again.");
}
}
}
}
} |
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import java.text.Format;
import java.util.Scanner;
public class discussion85 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
// Task 1
System.out.println("TASK 1");
printNatural(10);
// Task 2
System.out.println("TASK 2");
System.out.println("Enter a number");
int x = sc.nextInt();
generateTable(x);
// Task 3
System.out.println("TASK 3");
System.out.println("Enter a number");
int y = sc.nextInt();
factorial(y);
// Task 4
System.out.println("TASK 4");
System.out.println("Enter a number");
int a = sc.nextInt();
System.out.println("Enter a number for power");
int p = sc.nextInt();
exponentCalc(a, p);
// Task 5
System.out.println("TASK 5");
System.out.println("Enter string");
String sentence = sc.next();
countChar(sentence);
// Task 6
System.out.println("TASK 6");
System.out.println("Enter the height");
int height = sc.nextInt();
System.out.println("Enter the width");
int width = sc.nextInt();
printBox(height, width);
// Task 7
System.out.println("TASK 7");
boolean pinAccess = true;
final int crctPin = 12345;
int countTry = 1;
while (pinAccess) {
System.out.println("Enter the pin");
int pin = sc.nextInt();
if (pin == crctPin) {
System.out.println("Correct, welcome back.!");
break;
} else {
if (countTry > 3) {
System.out.println("Sorry but you have been locked out.!");
break;
} else {
System.out.println("not correct, try again!");
countTry++;
}
}
}
}
private static void printBox(int height, int width) {
int temp = width;
while (height > 0) {
temp = width;
while (temp > 0) {
System.out.print("#");
temp--;
}
System.out.print("\n");
height--;
}
}
private static void countChar(String sentence) {
int iterate = 0;
int count = 0;
int length = sentence.length();
while (length > 0) {
if (sentence.charAt(iterate) == 'a') {
count++;
}
length--;
iterate++;
}
System.out.println("count: " + count);
}
private static void exponentCalc(int a, int p) {
int result = 1;
while (p > 0) {
result *= a;
p--;
}
System.out.println("result: " + result);
}
private static void factorial(int y) {
int temp = y;
int fact = 1;
while (temp > 0) {
fact = fact * temp;
temp--;
}
System.out.printf("Factorial of %d is %d ", y, fact);
}
private static void generateTable(int x) {
for (int i = 1; i <= 10; i++) {
System.out.println(String.format("%d X %d = %d", x, i, x * i));
}
}
private static void printNatural(int n) {
for (int i = 1; i <= n; i++) {
System.out.println(i);
}
}
} |
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import java.util.*;
public class task86 {
public static void main(String[] args) {
p1();
p2();
p3();
p4();
p5();
p6();
p7();
}
public static void p1() {
Scanner scn = new Scanner(System.in);
int sum = 0;
for (int i = 1; i <= 10; i++) {
sum = sum + i;
}
System.out.println("Sum of 1st 10 numbers: " + sum);
System.out.println();
}
public static void p2() {
Scanner scn = new Scanner(System.in);
System.out.println("input a positive integer");
int n = scn.nextInt();
int prod = 1;
for (int i = 1; i <= 10; i++) {
System.out.println(" " + n + " * " + i + " = " + n * i);
}
System.out.println();
}
public static void p3() {
Scanner scn = new Scanner(System.in);
System.out.println("input a positive integer");
int n = scn.nextInt();
int fact = 1;
for (int i = 1; i <= n; i++) {
fact = fact * i;
}
System.out.println("Factorial of " + n + " : " + fact);
System.out.println();
}
public static void p4() {
Scanner scn = new Scanner(System.in);
System.out.println("input a positive integer");
int n = scn.nextInt();
System.out.println("input a positive integer to be its power");
int p = scn.nextInt();
int p1 = p;
int res = 1;
while (p > 0) {
res = res * n;
p--;
}
System.out.println(n + " to the power of " + p1 + " = " + res);
System.out.println();
}
public static void p5() {
Scanner scn = new Scanner(System.in);
System.out.println("input a string");
String s = scn.next();
int length = s.length();
int cnt = 0;
for (int i = 0; i < length; i++) {
if (s.charAt(i) == 'a') {
cnt++;
}
}
System.out.println("Count of the no. of a's in the string: " + cnt);
System.out.println();
}
public static void p6() {
Scanner scn = new Scanner(System.in);
System.out.println("enter the height and width of the box");
int h = scn.nextInt();
int w = scn.nextInt();
for (int ol = 1; ol <= h; ol++) {
System.out.print("#");
for (int il = 0; il <= w - 2; il++) {
System.out.print("#");
}
System.out.println();
}
System.out.println();
}
public static void p7() {
Scanner scn = new Scanner(System.in);
int cnt = 1;
final float pin = 123;
while (cnt <= 3) {
System.out.println("enter the pin number");
float input = scn.nextFloat();
if (input == pin) {
System.out.println("Correct, welcome back");
break;
} else {
System.out.println("Incorrect, try again");
cnt++;
}
}
if (cnt > 3) {
System.out.println("Sorry you have been locked out");
}
}
} |
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1import java.util.Scanner;
public class SumDemo {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.println("ENTER A NUMBER");
int n=sc.nextInt();
int sum=0;
for(int i=1;i<=n;i++)
{
sum=sum+i;
}
System.out.println("sum of first "+n+" natural number is "+sum);
}
}2import java.util.Scanner;
public class MultipTable {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter a positive unteger");
int n = Integer.parseInt(sc.nextLine());
int i;
for(i=1;i<=10;i++)
{
System.out.println(i + " * " + n + " = " + (i * n));
}
sc.close();
}
}3import java.util.Scanner;
public class Factori {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter a number");
int n = sc.nextInt();
int f = 1, i;
for(i=1;i<=n;i++)
{
f = f * i;
}
System.out.println("The factorial of " + n + " is " + f);
sc.close();
}
}4import java.util.Scanner;
public class Power {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter two numbers");
int a = Integer.parseInt(sc.nextLine());
int b = Integer.parseInt(sc.nextLine());
int t = b;
int r = 1;
for(;b!=0;--b)
{
r *= a;
}
System.out.println(String.format("Value of %d power %d is %d", a, t, r));
sc.close();
}
}5import java.util.Scanner;
public class CharCount {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter a word");
String s = sc.next();
int i, n = s.length();
int c = 0;
for(i=0;i<n;i++)
{
if (s.charAt(i) == 'a') {
c++;
}
}
System.out.println(String.format("The character 'a' apperrs %d times in the word %s", c, s));
sc.close();
}
}6import java.util.Scanner;
public class PrintBox {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter height and width values");
int h = Integer.parseInt(sc.nextLine());
int w = Integer.parseInt(sc.nextLine());
int i, j;
for(i=0;i<h;i++)
{
for(j=0;j<w;j++)
{
System.out.print("# ");
}
System.out.println();
}
sc.close();
}
}7 |
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import java.util.*;
public class d86 {
public static void main(String[] args) {
q1();
q2();
q3();
q4();
q5();
q6();
q7();
}
public static void q1() {
int sum = 0;
for (int i = 1; i <= 10; i++) {
sum = sum + i;
}
System.out.println("Sum of 1st 10 numbers: " + sum);
System.out.println();
}
public static void q2() {
Scanner obj = new Scanner(System.in);
System.out.println("input a positive integer");
int n = obj.nextInt();
int prod = 1;
for (int i = 1; i <= 10; i++) {
System.out.println(" " + n + " * " + i + " = " + n * i);
}
System.out.println();
}
public static void q3() {
Scanner obj = new Scanner(System.in);
System.out.println("input a positive integer");
int n = obj.nextInt();
int fact = 1;
for (int i = 1; i <= n; i++) {
fact = fact * i;
}
System.out.println("Factorial of " + n + " : " + fact);
System.out.println();
}
public static void q4() {
Scanner obj = new Scanner(System.in);
System.out.println("input a positive integer");
int n = obj.nextInt();
System.out.println("input a positive integer to be its power");
int p = obj.nextInt();
int p1 = p;
int res = 1;
while (p > 0) {
res = res * n;
p--;
}
System.out.println(n + " to the power of " + p1 + " = " + res);
System.out.println();
}
public static void q5() {
Scanner obj = new Scanner(System.in);
System.out.println("input a string");
String s = obj.next();
int length = s.length();
int cnt = 0;
for (int i = 0; i < length; i++) {
if (s.charAt(i) == 'a') {
cnt++;
}
}
System.out.println("Count of the no. of a's in the string: " + cnt);
System.out.println();
}
public static void q6() {
Scanner obj = new Scanner(System.in);
System.out.println("enter the height and width of the box");
int h = obj.nextInt();
int w = obj.nextInt();
for (int ol = 1; ol <= h; ol++) {
System.out.print("#");
for (int il = 0; il <= w - 2; il++) {
System.out.print("#");
}
System.out.println();
}
System.out.println();
}
public static void q7() {
Scanner obj = new Scanner(System.in);
int cnt = 1;
final float pin = 123;
while (cnt <= 3) {
System.out.println("enter the pin number");
float input = obj.nextFloat();
if (input == pin) {
System.out.println("Correct, welcome back");
break;
} else {
System.out.println("Incorrect, try again");
cnt++;
}
}
if (cnt > 3) {
System.out.println("Sorry you have been locked out");
}
}
}screenshot |
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public class Ques1 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc=new Scanner(System.in);
System.out.println("ENTER THE NUMBER:");
int num=sc.nextInt();
System.out.println("ENTER THE RANGE:");
int n=sc.nextInt();
for(int i=1;i<=n;i++)
{
int tables=i*num;
System.out.println(i+"*"+n+"="+tables);
}
}
}
public class Ques2 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc=new Scanner(System.in);
System.out.println("ENTER A NUMBER");
int n=sc.nextInt();
int sum=0;
for(int i=1;i<=n;i++)
{
sum=sum+i;
}
System.out.println("sum of first "+n+" natural number is "+sum);
}
}
public class Ques3 {
public static void main(String[] args) {
// TODO Auto-generated method stub
int fact = 1,n;
Scanner sc=new Scanner(System.in);
System.out.println("ENTER THE NUMBER:");
n=sc.nextInt();
if(n==0)
{
System.out.println("factorial of 0 is 1");
}
for(int i=1;i<=n;i++)
{
fact=fact*i;
}
System.out.println("factorial of"+" "+n+" "+"is"+" "+fact );
}
}
public class Ques4 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc=new Scanner(System.in);
System.out.println("ENTER THE NUM-1:");
int base=sc.nextInt();
System.out.println("ENTER THE NUM-2:");
int exponent=sc.nextInt();
long result = 1;
for(int i=1;i<=exponent;i++)
{
result = result * base;
}
System.out.println("Answer = " + result);
}
}
public class Ques5 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc=new Scanner(System.in);
System.out.println("Enter the string :");
String a=sc.next();
int count=0,i;
char temp;
for(i=0; i<a.length();i++)
{
temp=a.charAt(i);
if(temp=='a')
{
count++;
}
}
System.out.println("No of times a found is "+count);
}
}
public class Ques6 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc = new Scanner(System.in);
System.out.println("Enter height and width values");
int h = Integer.parseInt(sc.nextLine());
int w = Integer.parseInt(sc.nextLine());
int i, j;
for(i=0;i<h;i++)
{
for(j=0;j<w;j++)
{
System.out.print("# ");
}
System.out.println();
}
sc.close();
}
}
public class Ques7 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc=new Scanner(System.in);
final int password=1810;
for(int i=0;i<3;i++)
{
System.out.println("Enter password :");
int passcode=sc.nextInt();
if(passcode==password)
{
System.out.println("Correct !! Welcome Back!");
break;
}
else{
System.out.println("Password incorrect!!");
}
if(i==3)
System.out.println("Sorry!! you have been locked out!!!");
}
}
} |
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Write a program to calculate the sum of the first 10 natural numbers.
Write a program that prompts the user to input a positive integer. It should then print the multiplication table of that number.
Write a program to find the factorial value of any number entered through the keyboard. Example: factorial 4 = 4 * 3 * 2 * 1 = 24
Two numbers are entered through the keyboard. Write a program to find the value of one number raised to the power of another. (Do not use Java built-in method)
Determine and print the number of times the character ‘a’ appears in the input entered by the user.
Write a program that will print a box of #’s taking from the user the height and width values.
You have to design the code such that the user has only three tries to guess the correct pin of the account. You set the pin as a constant with a final attribute. When correct display “Correct, welcome back.” When incorrect display “Incorrect, try again.”. When ran out of tries display “Sorry but you have been locked out.”
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