valid anagram

Author: Grit03

valid-anagram/Grit03.js

@@ -0,0 +1,28 @@
+/**
+ * @param {string} s
+ * @param {string} t
+ * @return {boolean}
+ */
+var isAnagram = function (s, t) {
+  const sMap = new Map();
+  const tMap = new Map();
+  for (const str of [...s]) {
+    sMap.set(str, (sMap.get(str) ?? 0) + 1);
+  }
+
+  for (const str of [...t]) {
+    tMap.set(str, (tMap.get(str) ?? 0) + 1);
+  }
+
+  if (sMap.size === tMap.size) {
+    let answer = true;
+    for (let [str, count] of sMap) {
+      if (!tMap.get(str) || tMap.get(str) !== sMap.get(str)) {
+        answer = false;
+      }
+    }
+    return answer;
+  }
+
+  return false;
+};