Return Largest Numbers in Arrays - Issue

Return Largest Numbers in Arrays - Issue
0

Tell us what’s happening:

For some reason, when the value of -3 is passed through and ASSIGNED to the variable it changes from negative to positive; failing the test case.

Your code so far


function largestOfFour(arr) {
  // You can do this!
  const numbers = [];
  for (let i = 0; i < arr.length; i++) {
    let largestNumOfArr = [i][0];
    for (let j = 0; j < arr[i].length; j++) {
      if(arr[i][j] > largestNumOfArr) {
        largestNumOfArr = arr[i][j];
      }
    }
    console.log('Largest Num Var:'+ largestNumOfArr); // Becomes positive 
    numbers.push(largestNumOfArr);
  }
  console.log('Largest Num Index:'+ arr[3][1]); // Needs to be negative
  console.log('Largest Num List:'+ numbers);
  return numbers;
}

largestOfFour([[17, 23, 25, 12], [25, 7, 34, 48], [4, -10, 18, 21], [-72, -3, -17, -10]]); 

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-algorithm-scripting/return-largest-numbers-in-arrays

let largestNumOfArr = [i][0];

This is just setting largestNumOfArr to the value of i, so for the last sub-array it starts at 3 and no value in the array is greater than largestNumOfArr so it never gets reset.