Improved each: Passing Element Indices

Lesson

Exercises

function each(array, func) {
            for (var i = 0; i < array.length; i++) {
              func(array[i], i);
            }
          }
          

Basic Requirements

1. Using our new version of each, write a function called indexedExponentials that, when given an array of numbers as an argument, returns a new array of numbers where each number has been raised to the power of its index, e.g.:

   function indexedExponentials(numbers) {
               // TODO: your code here
             }
             indexedExponentials([2, 5, 7, 4]); // => [2^0, 5^1, 7^2, 4^3] => [1, 5, 49, 64]
             

2. Write a function called evenIndexedOddNumbers that, when given an array of numbers as an argument, returns an array of only the odd numbers with even indices.

   function evenIndexedOddNumbers(numbers) {
               // TODO: Your code here
             }
             evenIndexedOddNumbers([1, 3, 3, 4, 7, 10]); // => [1, 3, 7]
             

3. Write a function called evenIndexedEvenLengths (yeah, a bit of a mouthful) that accepts an array of strings as a parameter, and returns only the strings that are found at an even index that also have an even length, e.g.:

   function evenIndexedEvenLengths(strings) {
               // TODO: your code here
             }
             evenIndexedEvenLengths(["lion", "monkey", "aardvaark", "cat", "doge"]);
             // => ["lion", "doge"]
             evenIndexedEvenLengths(["red", "green", "purple", "blue", "yellow"]);
             // => ["purple", "yellow"]