add: #236 group anagrams

Author: sukyoungshin

group-anagrams/sukyoungshin.ts

@@ -0,0 +1,31 @@
+// 1. 객체사용
+function groupAnagrams1(strs: string[]): string[][] {
+  let anagramGroups: Record<string, string[]> = {};
+  for (const word of strs) {
+    const sortedKey = [...word].sort().join("");
+
+    if (sortedKey in anagramGroups) {
+      anagramGroups[sortedKey].push(word);
+    } else {
+      anagramGroups[sortedKey] = [word];
+    }
+  }
+
+  return Object.values(anagramGroups);
+};
+
+// 2. Map 사용
+function groupAnagrams2(strs: string[]): string[][] {
+  let anagramGroups = new Map<string, string[]>();
+  for (const word of strs) {
+    const key = [...word].sort().join("");
+
+    if (anagramGroups.has(key)) {
+      anagramGroups.get(key)?.push(word);
+    } else {
+      anagramGroups.set(key, [word]);
+    }
+  }
+
+  return [...anagramGroups.values()];
+};