valid anagram solution

Author: hyer0705

valid-anagram/hyer0705.ts

@@ -0,0 +1,20 @@
+function isAnagram(s: string, t: string): boolean {
+  if (s.length !== t.length) return false;
+
+  const sCountMap = new Map<string, number>();
+  const tCountMap = new Map<string, number>();
+
+  for (let i = 0; i < s.length; i++) {
+    const currentS = s[i];
+    const currentT = t[i];
+
+    sCountMap.set(currentS, (sCountMap.get(currentS) || 0) + 1);
+    tCountMap.set(currentT, (tCountMap.get(currentT) || 0) + 1);
+  }
+
+  for (const [k, v] of sCountMap) {
+    if (!tCountMap.has(k) || tCountMap.get(k) !== v) return false;
+  }
+
+  return true;
+}