Functions Drills

functions.js

@@ -1 +1,60 @@
-// YOUR CODE HERE
+//1
+function maxOrMin (num1, num2, max){
+  //check if max is true. else return min.
+  if(max){
+//checking for max variable
+    if(num1<num2){
+      return num2;
+    }else if(num1>num2) {
+      return num1;
+    }
+  } else {
+    if(num1<num2){
+      return num1;
+    }else if (num1>num2){
+      return num2;
+    }
+  }
+}
+maxOrMin (1,2,true);
+
+
+//2
+sillySum = function (arr) {
+  var x = 0;
+  for (var i = 0; i < arr.length; i++) {
+    x += ( arr[i] * i);}
+    return x;
+  };
+var qTwoArray = [1,2,3];
+sillySum(qTwoArray);
+
+
+//3
+var isPrime = function(num) {
+  if (num < 2) {
+    return false;
+  }
+  for (var i = 2; i < num; i += 1) {
+    if (num % i === 0) {
+      return false;
+    }
+  }
+  return true;
+};
+
+
+//6
+var filter = function(arr, callback) {
+  var newArr = [];
+    for(var i=0; i<arr.length; i++) {
+      if (callback(arr[i])){
+        newArr.push(arr[i]);
+      }
+    }
+  return newArr;
+};
+
+var isOdd = function(num) {
+    return num % 2 !== 0;
+};