Merge pull request #1855 from jangwonyoon/main

[jangwonyoon] weeks 5 Solutions

Author: jangwonyoon

group-anagrams/jangwonyoon.js

@@ -0,0 +1,22 @@
+/**
+ * @param {string[]} strs
+ * @return {string[][]}
+ *
+ * 시간 복잡도: O(n * mlogm)
+ * 공간 복잡도: O(n * m)
+ *
+ */
+var groupAnagrams = function(strs) {
+    // 예외 처리
+    if (strs.length === 1) return [[...strs]];
+
+    const map = new Map();
+
+    for (const str of strs) {
+        const sortedStr = str.split('').sort().join('');
+        if (!map.has(sortedStr)) map.set(sortedStr, []);
+        map.get(sortedStr).push(str);
+    }
+
+    return [...map.values()];
+};