Valid Anagram

Author: sounmind

valid-anagram/sounmind.ts

@@ -0,0 +1,25 @@
+function isAnagram(s: string, t: string): boolean {
+  if (s.length !== t.length) {
+    return false;
+  }
+
+  const frequencyMap = {};
+
+  for (const letter of s) {
+    if (frequencyMap[letter]) {
+      frequencyMap[letter] += 1;
+    } else {
+      frequencyMap[letter] = 1;
+    }
+  }
+
+  for (const letter of t) {
+    if (frequencyMap[letter]) {
+      frequencyMap[letter] -= 1;
+    } else {
+      return false;
+    }
+  }
+
+  return true;
+}