Basic algorithm scripting Return largest Numbers in array

Curriculum Help
1

Hi,

Can anyone explain to me why this works in hardcoded:

function largestOfFour(arr) {

  var results = [];

  var largest = Math.max(...arr[0]);

  results.push(largest);

  var largest = Math.max(...arr[1]);

  results.push(largest);

  var largest = Math.max(...arr[2]);

  results.push(largest);

  var largest = Math.max(...arr[3]);

  results.push(largest);

  return results;

}

 

largestOfFour([[4, 5, 1, 3], [13, 27, 18, 26], [32, 35, 37, 39], [1000, 1001, 857, 1]]);

but it will not work if I out it through a loop? Because, the above cleared the challenge, but it was only to test if my theory was true, that it should work.

This is the code that does not work:

function largestOfFour(arr) {

for(var i = 0; i > arr.length; i++){

      var largest = Math.max(...arr[i]);

      results.push(largest);

}

 return results;           

}

I know there a lot of more elegant solutions than mine, I checked the hint section. But I can not for the life of me get why this won’t work….

2

the loop keep looping as long as the condition is true, yours start being false and the loop is never executed: i starts at 0, so it can never be bigger than arr.length

3

Your code has been blurred out to avoid spoiling a full working solution for other campers who may not yet want to see a complete solution. In the future, if you post a full passing solution to a challenge and have questions about it, please surround it with [spoiler] and [/spoiler] tags on the line above and below your solution code.

Thank you.

4

Thank you ieahleen, how han i have missed that :joy:

5

Ohh I did not realize that, I Will make sure to post IT wirh spoilers in the figure ud i have code snippets in the post.