Merge pull request #1261 from nrudev/main

[nrudev] WEEK 02 solution

Author: nrudev

valid-anagram/nrudev.ts

@@ -0,0 +1,22 @@
+function isAnagram(s: string, t: string): boolean {
+  if (s.length !== t.length) return false;
+
+  const sMap = new Map<string, number>();
+  const tMap = new Map<string, number>();
+
+  for (const letter of s) {
+    if (sMap.has(letter)) sMap.set(letter, sMap.get(letter)!! + 1);
+    else sMap.set(letter, 1);
+  }
+
+  for (const letter of t) {
+    if (tMap.has(letter)) tMap.set(letter, tMap.get(letter)!! + 1);
+    else tMap.set(letter, 1);
+  }
+
+  for (const [key, value] of sMap) {
+    if (!tMap.has(key) || tMap.get(key) !== value) return false;
+  }
+
+  return true;
+}