科大讯飞好难。。

package main;

import java.util.*;

/* LRLR */
public class Main {

	public static void main(String[] args) {

		Scanner in = new Scanner(System.in);

		String line = in.nextLine();

		int firstR = line.indexOf('R');
		if (firstR == -1) {
			System.out.println(line.length());
			return;
		}

		int result = firstR + 1;

		int count = 0;
		for (int i = firstR + 1; i < line.length(); i++) {
			if(line.charAt(i) == 'R') {
				count++;
			}
			if(count > 0 && line.charAt(i) == 'L') {
				count = 0;
			}
		}

		result += count;
		
		System.out.println(result);
	}

}

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牛客-68

西安电子科技大学 C++

只做了前两道题，第一题AC 第二题，有bug, 没通过。。。时间不够 import java.util.*; import java.util.Comparator; public class Main{ public static class Team{ public String name;//队伍名称 public int win;//胜利次数 public int lose;//失败次数 public int equ;//平分次数 public int ball;//进球个数 public Team(String name){ this.name = name; this.win = 0; this.lose = 0; this.equ = 0; this.ball = 0; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getWin() { return win; } public void setWin(int win) { this.win = win; } public int getLose() { return lose; } public void setLose(int lose) { this.lose = lose; } public int getEqu() { return equ; } public void setEqu(int equ) { this.equ = equ; } public int getBall() { return ball; } public void setBall(int ball) { this.ball = ball; } } public static class TeamComparator implements Comparator<Team> { @Override public int compare(Team t1, Team t2){ int score2 = t2.getWin()*3 + t2.getEqu(); int score1 = t1.getWin()*3 + t1.getEqu(); if(score2 > score1){//按照积分大小降序 return score2 - score1; }else if(score2 == score1){//积分相同时候 int n2 = t2.getWin() + t2.getEqu() - t2.getLose();//t2净胜球数量 int n1 = t1.getWin() + t1.getEqu() - t1.getLose();//t1净胜球数量 if(n2 > n1){ return n2 - n1;//净胜球数量降序 } } return (t2.getWin() + t2.getEqu()) - (t1.getWin() + t1.getEqu());//仍然相同的按进球数降序排列。 } } //2 //a //A //a-A 2:1 public static void main(String[] args){ Scanner sc = new Scanner(System.in); Team[] team;//参赛队伍数组 HashMap<String, Team> map = new HashMap<>(); while(sc.hasNextLine()){ int n = Integer.parseInt(sc.nextLine());//参赛队伍数量 int k = n*(n-1)/2;//循环读取比赛数据 team = new Team[n];//初始化参赛队伍数量 String line = ""; //创建队伍并初始化为空 for(int i=0; i<n; i++) map.put(sc.nextLine(), null); for(int i=0; i<k; i++){ String in = sc.nextLine();//读入一行比赛数据 String t1_name = in.split(" ")[0].split("-")[0]; String t2_name = in.split(" ")[0].split("-")[1]; int t1 = Integer.parseInt(in.split(" ")[1].split(":")[0]); int t2 = Integer.parseInt(in.split(" ")[1].split(":")[1]); if(map.containsKey(t1_name) && map.get(t1_name) != null){//如果存在t1这个队伍 Team temp1 = map.get(t1_name); if(t1 > t2){//t1胜一场 t2输一场 temp1.setWin(temp1.getWin() + 1); }else if(t1 < t2){ temp1.setLose(temp1.getLose() +1);//t1 lose1 t2 win1 }else{ temp1.setEqu(temp1.getEqu() + 1);//平分一次 } //更新进球个数 temp1.setBall(temp1.getBall() + t1); map.put(t1_name, temp1); }else{//如果不存在t1这个队伍 Team temp1 = new Team(t1_name); if(t1 > t2){//t1胜一场 t2输一场 temp1.setWin(1); }else if(t1 < t2){ temp1.setLose(1);//t1 lose1 t2 win1 }else{ temp1.setEqu(1);//平分一次 } //进球个数 temp1.setBall(t1); map.put(t1_name, temp1); } if(map.containsKey(t2_name) && map.get(t2_name) != null){//如果存在t2这个队伍 Team temp2 = map.get(t2_name); if(t2 > t1){//t2胜一场 t1输一场 temp2.setWin(temp2.getWin() + 1); }else if(t1 > t2){//t2输 temp2.setLose(temp2.getLose() +1);//t2 lose1 t1 win1 }else{ temp2.setEqu(temp2.getEqu() + 1);//平分一次 } //更新进球个数 temp2.setBall(temp2.getBall() + t2); map.put(t2_name, temp2); }else{//如果不存在t2这个队伍 Team temp2 = new Team(t2_name); if(t2 > t1){//t2胜一场 t2输一场 temp2.setWin(1); }else if(t1 < t2){ temp2.setLose(1);//t1 lose1 t2 win1 }else{ temp2.setEqu(1);//平分一次 } //进球个数 temp2.setBall(t2); map.put(t2_name, temp2); } int index = 0; for(Map.Entry<String, Team> entry : map.entrySet()){//遍历出所有队伍的信息 team[index] = entry.getValue(); index++; } //按照排序规则排序 Arrays.sort(team, new TeamComparator()); for(int j=0; j< n/2; j++){ Team temp = team[j]; System.out.println(temp.name); } } } } }

科大讯飞好难。。

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