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JavaScript

Posted by melissakeith
melissakeith
3,766 Points

Array reversal, need help!

I've tried these functions but when I try to cosole.log() they return a blank array. 

function reverseArray(array) {
  var arr = [];
  for (var i = array.length - 1; i > 0; i--) {

  }
  return arr;
}
console.log(reverseArray([1,2,3,4,5]));

function reverseArray(array) {
  var arr = [];
  for (var i = 0; i < array.length; i > 0; i++) {
      arr.unshift(array[i]);
  }
  return arr;
}
console.log(reverseArray([1,2,3,4,5]));

3 Answers

Ira Norba
Ira Norba
1,155 Points
Ira Norba
Ira Norba
1,155 Points

function reverseArray(array) { var arr = []; for (var i = 0; i < array.length; i++) { arr.unshift(array[i]); } return arr; } console.log(reverseArray([1,2,3,4,5]));

Ira Norba
Ira Norba
1,155 Points
Ira Norba
Ira Norba
1,155 Points

delete conditional "i > 0;"

melissakeith
melissakeith
3,766 Points

I tried it that way before and got the same thing, a blank array. So I tried adding and changing things around.

melissakeith
melissakeith
3,766 Points
melissakeith
melissakeith
3,766 Points

Nevermind that did work, must not have been paying attention to all the details before. Could you also look at the 2nd function and give suggestions to make that one work as well? I know there is two ways to do this at least, and I want to understand both.