group_anagram.js

function groupAnagrams(strs) {
  // create a hash map to store the words and their sorted versions as the keys
  let hash = {};

  // loop over the words
  for (let word of strs) {
    let cleansed = word.split("").sort().join("");
    // check if the sorted word is already in the map
    if (hash[cleansed]) {
      // if it is, add the word to the list of anagrams for that key
      hash[cleansed].push(word);
     } else {
      // if it is not, create a new entry in the map with the sorted word as the key and the word as the value
      hash[cleansed] = [word];
     }
   }
   return Object.values(hash);
}

// Run the function with inputStrings
const inputStrings = ["eat","tea","tan","ate","nat","bat"]
const result = groupAnagrams(inputStrings)
console.log(result)

// Result - [ [ 'eat', 'tea', 'ate' ], [ 'tan', 'nat' ], [ 'bat' ] ]