Check if Two Strings Are Anagrams

JavaScript

Technical Specification

Check if two given strings are anagrams of each other (same characters with same frequency).

Input/Output Samples

Input:"listen", "silent"

Output:true

Input:"hello", "world"

Output:false

Optimal Logic Path

function areAnagrams(a, b) {
  const normalize = (s) =>
    s.toLowerCase().replace(/[^a-z0-9]/g, "").split("").sort().join("");
  return normalize(a) === normalize(b);
}

Architectural Deep-Dive

We normalize both strings by cleaning and sorting their characters; if they match, they’re anagrams.