Algorithms in Javascript: CTCI 1.1 - Is Unique: Write a function to determine if a string has all unique characters.

ctci-1.1-string-has-all-unique-characters-1.js

const stringHasUniqueChars = (str) => {
  str.split('').sort().join('');
  for(let i=0;i<str.length; i++) {
    if(str[i] === str[i+1]) {
      return false;
    }
  }
  return true;
}

let s = 'Geeks for Geeks';
let y = stringHasUniqueChars(s);
let x = 'abc';
let z = stringHasUniqueChars(x);
console.log(s + ': ' + y);
console.log(x + ': ' + z);