easy_3_01.js

// remove duplicates

crunch("ddaaiillyy ddoouubbllee"); // "daily double"
crunch("4444abcabccba"); // "4abcabcba"
crunch("ggggggggggggggg"); // "g"
crunch("a"); // "a"
crunch(""); // ""

function crunch(string) {
  let letters = string.split("");
  for (let i = 0; i < letters.length; i++) {
    if (letters[i] === letters[i + 1]) {
      letters.splice(i, 1);
    }
  }
  console.log(letters.join(''));
}