原文: https://www.programiz.com/java-programming/examples/pyramid-pattern
源代码清单:
*
* *
* * *
* * * *
* * * * *源代码
public class Pattern {
public static void main(String[] args) {
int rows = 5;
for(int i = 1; i <= rows; ++i) {
for(int j = 1; j <= i; ++j) {
System.out.print("* ");
}
System.out.println();
}
}
}1
1 2
1 2 3
1 2 3 4
1 2 3 4 5源代码
public class Pattern {
public static void main(String[] args) {
int rows = 5;
for(int i = 1; i <= rows; ++i) {
for(int j = 1; j <= i; ++j) {
System.out.print(j + " ");
}
System.out.println();
}
}
} A
B B
C C C
D D D D
E E E E E源代码
public class Pattern {
public static void main(String[] args) {
char last = 'E', alphabet = 'A';
for(int i = 1; i <= (last-'A'+1); ++i) {
for(int j = 1; j <= i; ++j) {
System.out.print(alphabet + " ");
}
++alphabet;
System.out.println();
}
}
}* * * * *
* * * *
* * *
* *
*源代码
public class Pattern {
public static void main(String[] args) {
int rows = 5;
for(int i = rows; i >= 1; --i) {
for(int j = 1; j <= i; ++j) {
System.out.print("* ");
}
System.out.println();
}
}
}1 2 3 4 5
1 2 3 4
1 2 3
1 2
1源代码
public class Pattern {
public static void main(String[] args) {
int rows = 5;
for(int i = rows; i >= 1; --i) {
for(int j = 1; j <= i; ++j) { system.out.print(j + " "); } system.out.println(); }< code>=> *
* * *
* * * * *
* * * * * * *
* * * * * * * * *源代码
public class Pattern {
public static void main(String[] args) {
int rows = 5, k = 0;
for(int i = 1; i <= rows; ++i, k="0)" { for(int space="1;" <="rows" - i; ++space) system.out.print(" "); } while(k !="2" * i 1) system.out.print("* ++k; system.out.println(); code>=> 1
2 3 2
3 4 5 4 3
4 5 6 7 6 5 4
5 6 7 8 9 8 7 6 5源代码
public class Pattern {
public static void main(String[] args) {
int rows = 5, k = 0, count = 0, count1 = 0;
for(int i = 1; i <= 2 rows; ++i) { for(int space="1;" <="rows" - i; ++space) system.out.print(" "); ++count; } while(k !="2" * i 1) if (count system.out.print((i + k) " else ++count1; k count1) ++k; count1="count" = system.out.println(); code>=> * * * * * * * * *
* * * * * * *
* * * * *
* * *
*源代码
public class Pattern {
public static void main(String[] args) {
int rows = 5;
for(int i = rows; i >= 1; --i) {
for(int space = 1; space <= rows - i; ++space) { system.out.print(" "); } for(int j="i;" <="2" * i 1; ++j) system.out.print("* system.out.println(); }< code>=> 1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1源代码
public class Pattern {
public static void main(String[] args) {
int rows = 6, coef = 1;
for(int i = 0; i < rows; i++) {
for(int space = 1; space < rows - i; ++space) {
System.out.print(" ");
}
for(int j = 0; j <= 0 i; j++) { if (j="=" || i="=" 0) coef="1;" else * (i - j + 1) j; system.out.printf("%4d", coef); } system.out.println(); }< code>=>1
2 3
4 5 6
7 8 9 10源代码
public class Pattern {
public static void main(String[] args) {
int rows = 4, number = 1;
for(int i = 1; i <= rows; i++) { for(int j="1;" <="i;" j++) system.out.print(number + " "); ++number; } system.out.println(); }< code>=>