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GroupAnagrams.java
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GroupAnagrams.java
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public class Solution {
public List<List<String>> groupAnagrams(String[] strs) {
List<List<String>> result = new ArrayList<List<String>>();
Map<String, List<String>> map = new HashMap<String, List<String>>();
for (int i = 0; i < strs.length; i++) {
String org = strs[i];
char[] chars = org.toCharArray();
Arrays.sort(chars);
String sorted = new String(chars);
if (map.containsKey(sorted)) {
List<String> currList = map.get(sorted);
currList.add(org);
map.put(sorted, currList);
} else {
List<String> newList = new ArrayList<String>();
newList.add(org);
map.put(sorted, newList);
}
}
for (Map.Entry<String, List<String>> entry : map.entrySet()) {
List<String> curr = entry.getValue();
Collections.sort(curr);
result.add(curr);
}
return result;
}
}