diff --git a/src/main/java/leetcode/editor/cn/GroupAnagrams.java b/src/main/java/leetcode/editor/cn/GroupAnagrams.java
new file mode 100644
index 0000000..565b213
--- /dev/null
+++ b/src/main/java/leetcode/editor/cn/GroupAnagrams.java
@@ -0,0 +1,71 @@
+//给你一个字符串数组，请你将 字母异位词 组合在一起。可以按任意顺序返回结果列表。 
+//
+// 字母异位词 是由重新排列源单词的字母得到的一个新单词，所有源单词中的字母都恰好只用一次。 
+//
+// 
+//
+// 示例 1: 
+//
+// 
+//输入: strs = ["eat", "tea", "tan", "ate", "nat", "bat"]
+//输出: [["bat"],["nat","tan"],["ate","eat","tea"]] 
+//
+// 示例 2: 
+//
+// 
+//输入: strs = [""]
+//输出: [[""]]
+// 
+//
+// 示例 3: 
+//
+// 
+//输入: strs = ["a"]
+//输出: [["a"]] 
+//
+// 
+//
+// 提示： 
+//
+// 
+// 1 <= strs.length <= 10⁴ 
+// 0 <= strs[i].length <= 100 
+// strs[i] 仅包含小写字母 
+// 
+// Related Topics 哈希表 字符串 排序 👍 836 👎 0
+
+package leetcode.editor.cn;
+
+import java.util.*;
+
+//49:字母异位词分组
+class GroupAnagrams{
+    public static void main(String[] args) {
+        //测试代码
+        Solution solution = new GroupAnagrams().new Solution();
+        solution.groupAnagrams(new String[]{"eat","tea","tan","ate","nat","bat"});
+    }
+    
+    //力扣代码
+    //leetcode submit region begin(Prohibit modification and deletion)
+class Solution {
+    public List<List<String>> groupAnagrams(String[] strs) {
+        Map<String,List<String>> map = new HashMap<>();
+        for(String s:strs){
+            char[] chs = s.toCharArray();
+            Arrays.sort(chs);
+            String str = Arrays.toString(chs);
+            List<String> list = map.getOrDefault(str,new ArrayList<>());
+            list.add(s);
+            map.put(str,new ArrayList<>(list));
+        }
+        List<List<String>> result = new ArrayList<>();
+        for (String key:map.keySet()){
+            result.add(new ArrayList<>(map.get(key)));
+        }
+        return result;
+    }
+}
+//leetcode submit region end(Prohibit modification and deletion)
+
+}
\ No newline at end of file
diff --git a/src/main/java/leetcode/editor/cn/doc/all.json b/src/main/java/leetcode/editor/cn/doc/all.json
index d779c9c..c68613d 100644
--- a/src/main/java/leetcode/editor/cn/doc/all.json
+++ b/src/main/java/leetcode/editor/cn/doc/all.json
@@ -1 +1 @@
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\ No newline at end of file
diff --git a/src/main/java/leetcode/editor/cn/doc/content/GroupAnagrams.md b/src/main/java/leetcode/editor/cn/doc/content/GroupAnagrams.md
new file mode 100644
index 0000000..a6cc231
--- /dev/null
+++ b/src/main/java/leetcode/editor/cn/doc/content/GroupAnagrams.md
@@ -0,0 +1,35 @@
+<p>给你一个字符串数组，请你将 <strong>字母异位词</strong> 组合在一起。可以按任意顺序返回结果列表。</p>
+
+<p><strong>字母异位词</strong> 是由重新排列源单词的字母得到的一个新单词，所有源单词中的字母都恰好只用一次。</p>
+
+<p>&nbsp;</p>
+
+<p><strong>示例 1:</strong></p>
+
+<pre>
+<strong>输入:</strong> strs = <code>["eat", "tea", "tan", "ate", "nat", "bat"]</code>
+<strong>输出: </strong>[["bat"],["nat","tan"],["ate","eat","tea"]]</pre>
+
+<p><strong>示例 2:</strong></p>
+
+<pre>
+<strong>输入:</strong> strs = <code>[""]</code>
+<strong>输出: </strong>[[""]]
+</pre>
+
+<p><strong>示例 3:</strong></p>
+
+<pre>
+<strong>输入:</strong> strs = <code>["a"]</code>
+<strong>输出: </strong>[["a"]]</pre>
+
+<p>&nbsp;</p>
+
+<p><strong>提示：</strong></p>
+
+<ul>
+	<li><code>1 &lt;= strs.length &lt;= 10<sup>4</sup></code></li>
+	<li><code>0 &lt;= strs[i].length &lt;= 100</code></li>
+	<li><code>strs[i]</code>&nbsp;仅包含小写字母</li>
+</ul>
+<div><div>Related Topics</div><div><li>哈希表</li><li>字符串</li><li>排序</li></div></div><br><div><li>👍 836</li><li>👎 0</li></div>
\ No newline at end of file