From accf7162498d05546826505f23608b947fa72039 Mon Sep 17 00:00:00 2001
From: Heeseung Koo <nrudev@naver.com>
Date: Fri, 11 Apr 2025 23:19:36 +0900
Subject: [PATCH] w02: 242. Valid Anagram

---
 valid-anagram/nrudev.ts | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 valid-anagram/nrudev.ts

diff --git a/valid-anagram/nrudev.ts b/valid-anagram/nrudev.ts
new file mode 100644
index 000000000..9cc24fa3e
--- /dev/null
+++ b/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;
+}