doubleTripleMap.js

// Write code to create a function that accepts an array of numbers and returns a new array that corresponds to the original array
// If a element in the original array is even, the element at the same index in the new array should be double the original element
// If an element in the original array is odd, the element at the same index of the new array should be triple the original element

var doubleTripleMap = function(arr) {
  var doubleTripleArr = arr.map(function(num) {
    if (num % 2 === 0) {
      return num * 2;
    }
    return num * 3;
  });

  return doubleTripleArr;
};

// This could also be achieved using a for-loop

// var doubleTripleMap = function(arr) {
//   var doubleTripleArr = [];

//   for (var i = 0; i < arr.length; i++) {
//     var num = arr[i];

//     if (num % 2 === 0) {
//       doubleTripleArr.push(num * 2);
//     } else {
//       doubleTripleArr.push(num * 3);
//     }
//   }
//   return doubleTripleArr;
// };