Daily Coding Challenge - Purge Most Frequent

JavaScript
1

Tell us what’s happening:

I’m struggling to see what exactly is wrong with my code. By all accounts it should be working.

Your code so far

function purgeMostFrequent(arr) {

  //I can't think of a more efficient way to do this without using a hashmap to store the word and it's occurences 

  let map = new Map();
  
  for(let i = 0; i < arr.length; i++){

    let occurences = 0; 

    for(let j = 0; j < arr.length; j++){

      if(arr[i] == arr[j]){
        occurences++; 
      }
    }

    map.set(arr[i], occurences); 
  }

  //now find which one has the highest value 
  let maxKey = null;
  let maxValue = -Infinity; // Initialize with negative infinity so any value is greater

  for (const [key, value] of myMap) {
    if (value > maxValue) {
      maxValue = value;
      maxKey = key;
    }
  }

  let mostFrequentElement = map.get(maxKey); 
  //remove the most frequently occuring element 
  let filteredArr = arr.filter(item => item !== mostFrequentElement); 

  console.log(filteredArr)
  
  return filteredArr;
}

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36

Challenge Information:

Daily Coding Challenge - Purge Most Frequent
https://www.freecodecamp.org/learn/daily-coding-challenge/2025-12-20

2

have you tried calling your function to see what is it’s output?