题目描述

乒乓球是谁先打满11或21分，且至少领先对手两分就算胜利

java 代码

import java.io.*;
import java.util.*;

public class Main{
    static Scanner in = new Scanner(System.in);
    static PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));

    public static void work(char[] s, int n){
        int W = 0, L = 0;
        for(int i=0; i<s.length && s[i]!='E'; i++){
            if(s[i]=='W') W++;
            else L++;
            if(W>=n || L>=n){
                if(Math.abs(W-L)>=2){
                    out.println(W+":"+L);
                    W = 0;          // 清零
                    L = 0;      
                }
            }
        }
        out.println(W+":"+L);
    }

    public static void main(String[] args)throws IOException{
        StringBuilder sb = new StringBuilder();
        while(in.hasNext()) sb.append(in.nextLine());
        char[] s = sb.toString().toCharArray();
        work(s, 11);
        out.println();
        work(s, 21);
        out.flush();
        out.close();
    }
}