Anagrams

Directions

Check to see if two provided strings are anagrams of eachother. One string is an anagram of another if it uses the same characters in the same quantity. Only consider characters, not spaces or punctuation. Consider capital letters to be the same as lower case

Examples:

anagrams('rail safety', 'fairy tales') --> True

anagrams('RAIL! SAFETY!', 'fairy tales') --> True

anagrams('Hi there', 'Bye there') --> False

Solutions

• Solution #1

    function anagrams(stringA, stringB) {
      
      const aCharMap = buildCharMap(stringA);
      const bCharMap = buildCharMap(stringB);
    
      if (Object.keys(aCharMap).length !== Object.keys(bCharMap).length) {
        return false;
      }
    
      for (let char in aCharMap) {
        if (aCharMap[char] !== bCharMap[char]) {
          return false;
        }
      }
      return true;
    }
    
    function buildCharMap(str) {
      const charMap = {};
    
      for (let char of str.replace(/[^\w]/g, '').toLowerCase()) {
        charMap[char] = charMap[char] + 1 || 1;
      }
    
      return charMap;
    }