How to chech if the string characters have equal duplicates-CodePudding

I want to Check if the characters of a string have equal duplicate

if I enter :"abaababb" returns true because I have 4 'a' and 4 'b' in that string

if I enter : "addda" returns false because I have 2 'a' and 3 'd'

I tryed to check the duplicates but I found out I have to do it for some characters

CodePudding user response：

just need to create an empty object and loop through each character and increment the value associated with the key. Keep track of the highest value so we can easily use every on the array from Object.values and check if all character counts match this value

let check = "abaababb";
let check2 = "addda";

function hasEqualCharacters( input ) {
  let characters = {};
  let highestCount = 0;
  
  for( let i =0; i < input.length; i  ) {
    if( characters[input[i]]) {
      characters[input[i]]  ;
      if( highestCount < characters[input[i]]) {
        highestCount = characters[input[i]];
      }
    } else {
      characters[input[i]] = 1;
    }
   }

  
  return Object.values(characters).every( (charCount) => {
    return charCount === highestCount;
  });
}

console.log(hasEqualCharacters(check));
console.log(hasEqualCharacters(check2));

Can see it working here https://playcode.io/1024243