createRandomArray.js

function identity(value) {
  return value;
}

function createArray(length, transformation) {
  transformation = transformation || identity;
  var arr = [];

  while (length != 0) {
    arr.push(transformation(arr.length));
    length--;
  }

  return arr;
}

function createRandomNumber() {  
  var max = 100;
  var min = 1;
  return Math.floor(Math.random() * (max - min)) + min;
}

function createRandomArray(length) {
  return createArray(length, createRandomNumber);
}