group-anagrams solution

Author: Moonjonghoo

group-anagrams/moonjonghoo.js

@@ -0,0 +1,22 @@
+/**
+ * @param {string[]} strs
+ * @return {string[][]}
+ */
+var groupAnagrams = function (strs) {
+  let hashMap = new Map();
+  for (let i = 0; i < strs.length; i++) {
+    let key = strs[i].split("").sort().join("");
+    if (!hashMap.has(key)) {
+      hashMap.set(key, [strs[i]]);
+    } else {
+      hashMap.set(key, [...hashMap.get(key), strs[i]]);
+    }
+  }
+  let answer = [];
+  for ([key, value] of hashMap) {
+    answer.push(value);
+  }
+  return answer.sort((a, b) => a.length - b.length).map((arr) => arr.sort());
+};
+
+console.log(groupAnagrams(["eat", "tea", "tan", "ate", "nat", "bat"]));