Basic Algorithm Scripting - Return Largest Numbers in Arrays

JavaScript
1

Tell us what’s happening:
Hey guy, I dont know why my code is wrong. Please show my wrong in this code.

Your code so far

function largestOfFour(arr) {
  let maxnum= 0;
  let newarr = [ ] ;

  for (let i=0; i< arr.length; i++) {
    for (let j=0; j< arr[i].length; j++) {
      if (arr[i][j]> maxnum) {
        maxnum =arr[i][j]; 
        newarr.push(maxnum);
      } 
    }

  }
  return newarr;
}

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

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Challenge: Basic Algorithm Scripting - Return Largest Numbers in Arrays

Link to the challenge:

2

What happens if the maximum in one subarray is smaller than in another?

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