group-anagrams

Author: jun0811

group-anagrams/jun0811.js

@@ -0,0 +1,21 @@
+/**
+ * @param {string[]} strs
+ * @return {string[][]}
+ */
+var groupAnagrams = function (strs) {
+  const hashMap = new Map();
+  const res = [];
+  strs.forEach((str, index) => {
+    const sortedStr = [...str].sort().join('');
+    if (hashMap.has(sortedStr)) {
+      hashMap.set(sortedStr, [...hashMap.get(sortedStr), index]);
+    } else {
+      hashMap.set(sortedStr, [index]);
+    }
+  });
+  for (const [key, values] of hashMap) {
+    const anagrams = values.map((v) => strs[v]);
+    res.push(anagrams);
+  }
+  return res;
+};