Create GroupAnagrams.java

Author: harshithasudhakar

Strings/GroupAnagrams.java

@@ -0,0 +1,26 @@
+class GroupAnagrams {
+    public List<List<String>> groupAnagrams(String[] strs) {
+        Map<String, List<String>> map = new HashMap<>();
+
+        List<List<String>> result = new ArrayList<List<String>>();
+
+        for(String s : strs){
+            char[] convert = s.toCharArray();
+            Arrays.sort(convert);
+            String sorted = new String(convert);
+
+            if(map.containsKey(sorted)){
+                map.get(sorted).add(s);
+            }
+            else{
+                map.put(sorted, new ArrayList<>(List.of(s)));
+            }
+        }
+
+        for(List<String> innerList: map.values()){
+            result.add(innerList);
+        }
+
+        return result;
+    }
+}