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Comprehensive Java common library (Java7+)

There is a newer version: 22.1.0

/*
 * Copyright (C) 2015-2017 S.Violet
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Project GitHub: https://github.com/shepherdviolet/thistle
 * Email: [email protected]
 */

package sviolet.thistle.util.sort;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;


/**
 * 
 * 中文排序工具
 * 
 * @author S.Violet ()
 *
 */
public class ChineseSortUtils {

	public static void sort(String[] list){
		Arrays.sort(list, java.text.Collator.getInstance(java.util.Locale.CHINA));
	}

	public static void sort(List list){
		Collections.sort(list, java.text.Collator.getInstance(java.util.Locale.CHINA));
	}
	
	/**
	 *	List list = ...
	 *	list = ChineseSortUtils.keySort(list, new KeyGetter(){
	 *		//根据Item对象的getName()方法得到关键字
	 *		public String getKey(Item obj) {
	 *			return obj.getName();
	 *		}
	 *	});
	 */
	public static  List keySort(List list, KeyGetter keyGetter){
		//取得对象们的关键字
		String[] keyArray = new String[list.size()];
		for(int i = 0 ; i < list.size() ; i++){
			keyArray[i] = keyGetter.getKey(list.get(i));
		}

		//关键字排序
		sort(keyArray);

		//根据关键字顺序对对象进行排序
		List result = new ArrayList<>();
		for(int i = 0 ; i < keyArray.length ; i++){
			for(int j = 0 ; j < list.size() ; j++){
				if(keyGetter.getKey(list.get(j)).equals(keyArray[i])){
					result.add(list.get(j));
					list.remove(j);
					break;
				}
			}
		}
		return result;
	}

	public interface KeyGetter{
		/**
		 * 实现从对象中获取key, 用于排序
		 * @param obj 待排序对象
		 * @return key
		 */
		String getKey(T obj);
	}

}