Day29 字母异位词分组-CFANZ编程社区

Day29 字母异位词分组

给定一个字符串数组，将字母异位词组合在一起。字母异位词指字母相同，但排列不同的字符串

https://leetcode-cn.com/problems/group-anagrams/

示例1：

提示：

Java解法

package sj.shimmer.algorithm.ten_3;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Created by SJ on 2021/2/22.
 */

class D29 {
    public static void main(String[] args) {
//        System.out.println(groupAnagrams(new String[]{"eat", "tea", "tan", "ate", "nat", "bat"}));
        System.out.println(groupAnagrams(new String[]{"","b"}));
        System.out.println(groupAnagrams(new String[]{"eat","tea","tan","ate","nat","bat"}));
    }

    public static List<List<String>> groupAnagrams(String[] strs) {
        Map<String, List<String>> map = new HashMap<String, List<String>>();
        for (String str : strs) {
            char[] array = str.toCharArray();
            Arrays.sort(array);
            String key = new String(array);
            List<String> list = map.getOrDefault(key, new ArrayList<String>());
            list.add(str);
            map.put(key, list);
        }
        return new ArrayList<List<String>>(map.values());
    }
}