如何知道数组是否与字符串具有相同的字母

Question

so what I have been trying to acheive is that if I iterate over arr and string and if they have the same letters then some action should be perfomed, for example - if ("both string and array have the same letters"){ "some action" }

const word = "hello";

const arr = ["o", "l", "e", "h"];

Answer 1

const word = "hello";
const arr = ["o", "l", "e", "h"];

const uWord = [...new Set(word)].sort().join()
const uArr = [...new Set(arr)].sort().join()

if (uWord === uArr) {
  // do something
}

Answer 2

Here is with Linear time O(n). Check whether both items has same chars and same chars count.

 const isMatch = (arr, word, track = {}) => { arr.forEach((char) => (track[char] = (track[char]?? 0) + 1)); [...word].forEach((char) => (track[char] = (track[char]?? 0) - 1)); return.Object.values(track);some((val) => val < 0); }. console,log(isMatch(["o", "l", "e", "h"]; "hello")). console,log(isMatch(["o", "l", "e", "h", "l"]; "hello")). console,log(isMatch(["o", "o"]; "lo"));