Java入门第三季《随机字符串排序》

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

public class ListSort {
	List strings = new ArrayList();
	
   
	public void randomList() {
		//随机生成十条字符串
		for(int i=0; i<10; i++) {
			StringBuilder str = new StringBuilder();
			Random ran = new Random();
			int strlen = ran.nextInt(10)+1; //+1使长度上限为10同时下限为1
			for(int j=0; j96) //剔除特殊字符
					str.append(ranChar);
			}
			strings.add(str.toString());
		}
		//遍历打印字符串
		for(String str : strings) {
			System.out.println(strings.indexOf(str)+1+":"+str);
		}
	}
	
   
	public void sortList() {
		Collections.sort(strings);
		for(String str : strings) {
			System.out.println(strings.indexOf(str)+1+":"+str);
		}
	}
   
	public static void main(String[] args) {
		ListSort ls = new ListSort();
		System.out.println("十条随机字符串：");
		ls.randomList();
		System.out.println("n排序后的字符串：");
		ls.sortList();
	}
}