Basic Algorithm Scripting - Return Largest Numbers in Arrays

JavaScript
1

Tell us what’s happening:
Describe your issue in detail here.

trying to figure out how to get the largest number in the negative Array

function largestOfFour(arr) {
  let result = [];

  for (let i = 0; i < arr.length; i++) {
    let highestNum = 0;
    for (let j = 0; j < arr[i].length; j++) {
      let individualArray = arr[i][j];
      if (individualArray > highestNum ) { 
        highestNum = individualArray;
      }
    }
    result.push(highestNum)
  }
  return result;
}

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

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Challenge: Basic Algorithm Scripting - Return Largest Numbers in Arrays

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2

Is there a reason you are setting the default to 0 when you know there can be negative numbers in the array?

3

You should change the highestNum value to the first value of the individual array so that elements inside the array are compared.

let highestNum = arr[i][0];
4

what if I made it -infinity would it work?

5

Try it out. Trying is free.

6

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