Bonfire Challenge: Return Largest Numbers in Arrays

Hello! I have two different answers for this challenge, one results in ‘[ 5, 27, 39, 1001 ]’, the other in ‘5, 27, 39, 1001’. I can’t figure out how to remove the apostrophe while keeping the brackets. Here are my two separate pieces of code:

This is the one with ‘[]’:


function largestOfFour(arr) {
  arr.forEach(function(arr1) {
    return arr1.sort(function(a, b) {
      return b - a;
    });
      });
      
      arr.forEach(function(arr1) {
       return arr1.splice(1);
      });
    
   var result = arr.join();
   
   return '[' + result + ']';
   
}

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

This is the one with ‘’:

function largestOfFour(arr) {
  arr.forEach(function(arr1) {
    return arr1.sort(function(a, b) {
      return b - a;
    });
      });
      arr.forEach(function(arr1) {
        return arr1.splice(1);
      });
  return arr.join(" ");
}

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

Thank you for your help! -Marie

Thank you, Randell, for the suggestions; I will give it a try.