大家应该都会玩“锤子剪刀布”的游戏：
现给出两人的交锋记录，请统计双方的胜、平、负次数，并且给出双方分别出什么手势的胜算最大。
[编程题]锤子剪刀布 (20)
- 热度指数：31989 时间限制：C/C++ 1秒，其他语言2秒 空间限制：C/C++ 32M，其他语言64M
- 算法知识视频讲解
输入描述:
输入第1行给出正整数N（<=105），即双方交锋的次数。随后N行，每行给出一次交锋的信息，即甲、乙双方同时给出的的手势。C代表“锤子”、J代表“剪刀”、B代
表“布”，第1个字母代表甲方，第2个代表乙方，中间有1个空格。
输出描述:
输出第1、2行分别给出甲、乙的胜、平、负次数，数字间以1个空格分隔。第3行给出两个字母，分别代表甲、乙获胜次数最多的手势，中间有1个空格。如果解不唯
一，则输出按字母序最小的解。
示例1
输入
10<br/>C J<br/>J B<br/>C B<br/>B B<br/>B C<br/>C C<br/>C B<br/>J B<br/>B C<br/>J J
输出
5 3 2<br/>2 3 5<br/>B B
import java.util.Scanner;
public class ThreadMain {
//枚举更易读
enum Gesture{
B, C, J;
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();//比赛次数
int[][] countX = new int[3][3];//记录出手，结果
int[][] countY = new int[3][3];
while (n > 0){
Gesture x = Gesture.valueOf(sc.next());
Gesture y = Gesture.valueOf(sc.next());
match(x, y, countX, countY);
n--;
}
printResults(countX, countY);
}
private static void match(Gesture x, Gesture y, int[][] countX, int[][] countY){
if (x == y){//x平局
countX[x.ordinal()][1]++;
countY[y.ordinal()][1]++;
} else if ((x == Gesture.C && y == Gesture.J) ||//x胜利情况
(x == Gesture.J && y == Gesture.B) ||
(x == Gesture.B && y == Gesture.C) ) {
countX[x.ordinal()][0]++;
countY[y.ordinal()][2]++;
}else {//y胜利
countX[x.ordinal()][2]++;
countY[y.ordinal()][0]++;
}
}
private static Gesture findMaxGesture(int[][] count){
Gesture maxGesture = Gesture.C;
int maxCount = count[maxGesture.ordinal()][0];
for (int i = 0; i < 3; i++){
int currentCount = count[i][0];
Gesture currentGesture = Gesture.values()[i];
if (currentCount > maxCount || (currentCount == maxCount && currentGesture.compareTo(maxGesture) < 0)) {
maxCount = currentCount;
maxGesture = currentGesture;
}
}
return maxGesture;
}
private static void printResults(int[][] countX, int[][] countY){
int winX = countX[Gesture.C.ordinal()][0] + countX[Gesture.J.ordinal()][0] + countX[Gesture.B.ordinal()][0];
int deuceX = countX[Gesture.C.ordinal()][1] + countX[Gesture.J.ordinal()][1] + countX[Gesture.B.ordinal()][1];
int loseX = countX[Gesture.C.ordinal()][2] + countX[Gesture.J.ordinal()][2] + countX[Gesture.B.ordinal()][2];
int winY = loseX;
int deuceY = deuceX;
int loseY = winX;
System.out.printf("%d %d %d%n", winX, deuceX, loseX);
System.out.printf("%d %d %d%n", winY, deuceY, loseY);
System.out.print(findMaxGesture(countX) + " ");
System.out.print(findMaxGesture(countY));
}
}
发表于 2025-04-19 10:39:31
回复(0)
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
/*输入第1行给出正整数N（<=105），即双方交锋的次数。随后N行，每行给出一次交锋的信息，
即甲、乙双方同时给出的的手势。C代表“锤子”、J代表“剪刀”、B代
表“布”，第1个字母代表甲方，第2个代表乙方，中间有1个空格。*/
public class Main{
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
int n = Integer.parseInt(reader.readLine());
int vict = 0, fail = 0, same = 0;
String[] str = new String[]{"B","C","J"};
int[] count1 = new int[3];
int[] count2 = new int[3];
for (int i = 0; i < n; i++) {
String[] s = reader.readLine().split(" ");
if (s[0].equals(s[1])) {
same++;
} else if (("C".equals(s[0]) && "J".equals(s[1])) ||
("J".equals(s[0]) && "B".equals(s[1])) ||
("B".equals(s[0]) && "C".equals(s[1]))) {
vict++;
for(int k = 0;k < 3;k++){
if(s[0].equals(str[k])) count1[k]++;
}
} else {
fail++;
for(int k = 0;k < 3;k++){
if(s[1].equals(str[k])) count2[k]++;
}
}
}
reader.close();
System.out.println(vict + " " + same + " " + fail);
System.out.println(fail + " " + same + " " + vict);
System.out.println(str[get(count1)] + " " + str[get(count2)]);
}i
private static int get(int[] arr){
int index = 0;
for (int i = 0; i < arr.length; i++) {
if (arr[i] > arr[index]) {
index = i;
}
}
return index;
}
}
编辑于 2021-01-26 13:14:22
回复(0)
import java.util.Scanner;
public class Main {
public static void main(String args[]){
Scanner sc = new Scanner(System.in);
int awC = 0,awB =0,awJ = 0;
int bwC = 0,bwB = 0,bwJ = 0;
int pin = 0;
int n = sc.nextInt();
for(int i = 0;i<n;i++){
String a = sc.next();
String b = sc.next();
if(a.equals("C")&&b.equals("J")){
awC++;
}else if(a.equals("J")&&b.equals("B")){
awJ++;
}else if(a.equals("B")&&b.equals("C")){
awB++;
}else if(a.equals("J")&&b.equals("C")){
bwC++;
}else if(a.equals("B")&&b.equals("J")){
bwJ++;
}else if(a.equals("C")&&b.equals("B")){
bwB++;
}
else if(a.equals("C")&&b.equals("C")||a.equals("J")&&b.equals("J")||a.equals("B")&&b.equals("B")){
pin++;
}else {
System.out.println("错误");
}
}
int aw = awB+awC+awJ;
int bw = bwB+bwC+bwJ;
int ad = n-aw-pin;
int bd = n-bw-pin;
System.out.println(aw+" "+pin+" "+ad);
System.out.println(bw+" "+pin+" "+bd);
max(awB,awC ,awJ );
System.out.print(" ");
max(bwB,bwC ,bwJ );
}
private static void max(int B,int C,int J){
if(B>C&&B>J){
System.out.print("B");
}else if(J>C&&J>B){
System.out.print("J");
}else if(C>B&&C>J){
System.out.print("C");
}else if((B==C&&B>J)||(B==C&&C==J)||(B==J&&B>C)){
System.out.print("B");
}else if(C==J&&C>B){
System.out.print("C");
}else {
System.out.print("错误");
}
}
}
发表于 2020-03-04 17:39:21
回复(0)
import java.util.Scanner;
public clas***ain {
public static void main(String[] arg***r /> {
int n;
String str_1,str_2;
int win=0,ping=0,fu=0;
Scanner sc = new Scanner(System.in);
n = sc.nextInt();
char[][] ch = new char[2][30];
for(int i=1;i<=n;i++)
{
str_1 = sc.next();
str_2 = sc.next();
if(result(str_1,str_2)==1)
{
ch[0][str_1.charAt(0)-'A']++;
win++;
}
else if(result(str_1,str_2)==0)
ping++;
else if(result(str_1,str_2)==-1)
{
ch[1][str_2.charAt(0)-'A']++;
fu++;
}
}
System.out.println(win+" "+ping+" "+fu);
System.out.println(fu+" "+ping+" "+win);
int max_a = 0;
int max_b = 0;
char a='B';
char b='B';
for(int i=0;i<=27;i++)
{
if(max_a {
max_a = ch[0][i];
a = (char) ('A' + i);
}
if(max_b {
max_b = ch[1][i];
b = (char) ('A' + i);
}
}
System.out.println(a+" "+b);
}
public static int result(String a, String b)
{
if(a.equals("C")&&b.equals("J")||a.equals("J")&&b.equal***")||a.equal***")&&b.equals("C"))
return 1;
else if(a.equal***))
return 0;
else
return -1;
}
}
public clas***ain {
public static void main(String[] arg***r /> {
int n;
String str_1,str_2;
int win=0,ping=0,fu=0;
Scanner sc = new Scanner(System.in);
n = sc.nextInt();
char[][] ch = new char[2][30];
for(int i=1;i<=n;i++)
{
str_1 = sc.next();
str_2 = sc.next();
if(result(str_1,str_2)==1)
{
ch[0][str_1.charAt(0)-'A']++;
win++;
}
else if(result(str_1,str_2)==0)
ping++;
else if(result(str_1,str_2)==-1)
{
ch[1][str_2.charAt(0)-'A']++;
fu++;
}
}
System.out.println(win+" "+ping+" "+fu);
System.out.println(fu+" "+ping+" "+win);
int max_a = 0;
int max_b = 0;
char a='B';
char b='B';
for(int i=0;i<=27;i++)
{
if(max_a {
max_a = ch[0][i];
a = (char) ('A' + i);
}
if(max_b {
max_b = ch[1][i];
b = (char) ('A' + i);
}
}
System.out.println(a+" "+b);
}
public static int result(String a, String b)
{
if(a.equals("C")&&b.equals("J")||a.equals("J")&&b.equal***")||a.equal***")&&b.equals("C"))
return 1;
else if(a.equal***))
return 0;
else
return -1;
}
}
发表于 2019-05-22 11:51:47
回复(0)
终于可以AC！！！
import java.util.*;
public clas***ain {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int n = scanner.nextInt();
String[][] array = new String[n][2];
for (int i = 0; i < array.length; i++) {
for (int j = 0; j < array[0].length; j++) {
array[i][j] = scanner.next();
}
}
// 分别代表BCJ
int[] array2 = {0, 0, 0};
int[] array3 = {0, 0, 0};
int pingju = 0;
for (int i = 0; i < array.length; i++) {
if (array[i][0].equals(array[i][1])) {
pingju++;
} else if ((array[i][0].equal***") && array[i][1].equals("C"))) {
array2[0]++;
} else if ((array[i][0].equals("C") && array[i][1].equals("J"))) {
array2[1]++;
} else if (array[i][0].equals("J") && array[i][1].equal***")) {
array2[2]++;
} else if (array[i][0].equal***") && array[i][1].equals("J")) {
array3[2]++;
} else if ((array[i][0].equals("J") && array[i][1].equals("C"))) {
array3[1]++;
} else if ((array[i][0].equals("C") && array[i][1].equal***"))) {
array3[0]++;
}
}
int jia_win = 0;
for (int i = 0; i < array2.length; i++) {
jia_win += array2[i];
}
System.out.print(jia_win);
System.out.print(" " + pingju + " ");
System.out.println(n - jia_win - pingju);
System.out.print(n - jia_win - pingju);
System.out.print(" " + pingju + " ");
System.out.println(jia_win);
// System.out.println(Arrays.toString(array2));
// System.out.println(Arrays.toString(array3));
HashMap<String, Integer> map = new HashMap<>();
map.put("B", array2[0]);
map.put("C", array2[1]);
map.put("J", array2[2]);
HashMap<String, Integer> map2 = new HashMap<>();
map2.put("B", array3[0]);
map2.put("C", array3[1]);
map2.put("J", array3[2]);
ArrayList<Map.Entry<String, Integer>> list = new ArrayList<>(map.entrySet());
Collections.sort(list, new Comparator<Map.Entry<String, Integer>>() {
@Override
public int compare(Map.Entry<String, Integer> o1, Map.Entry<String, Integer> o2) {
return o1.getValue().compareTo(o2.getValue());
}
});
ArrayList<Map.Entry<String, Integer>> list2 =
new ArrayList<>(map2.entrySet());
Collections.sort(list2, new Comparator<Map.Entry<String, Integer>>() {
@Override
public int compare(Map.Entry<String, Integer> o1, Map.Entry<String, Integer> o2) {
return o1.getValue().compareTo(o2.getValue());
}
});
// System.out.println(map);
// System.out.println(list);
// for (Map.Entry<String ,Integer> mapping:list
// ) {
// System.out.println(mapping.getKey()+" "+mapping.getValue());
// }
String first = null;
if (list.get(2).getValue() == list.get(1).getValue() && list.get(1).getValue() == list.get(0).getValue()) {
first = list.get(0).getKey();
} else if (list.get(2).getValue() == list.get(1).getValue()) {
first = list.get(1).getKey();
} else {
first = list.get(2).getKey();
}
String second = null;
if (list2.get(2).getValue() == list2.get(1).getValue() && list2.get(1).getValue() == list2.get(0).getValue()) {
second = list2.get(0).getKey();
} else {
second = list2.get(2).getKey();
}
System.out.print(first + " " + second);
}
}
发表于 2019-05-16 13:47:38
回复(0)
import java.util.Map;
import java.util.Scanner;
import java.util.TreeMap;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
while (sc.hasNext()) {
int n = sc.nextInt();
int v = 0;
int f = 0;
Map<Character, Integer> mapA = new TreeMap<>();
Map<Character, Integer> mapB = new TreeMap<>();
for (int i = 0; i < n; i++) {
char a = sc.next().charAt(0);
char b = sc.next().charAt(0);
int re = match(a, b);
if (re == 1) {
v++;
if (mapA.containsKey(a)) {
mapA.put(a, mapA.get(a) + 1);
} else {
mapA.put(a, 1);
}
} else if (re == -1) {
f++;
if (mapB.containsKey(b)) {
mapB.put(b, mapB.get(b) + 1);
} else {
mapB.put(b, 1);
}
}
}
System.out.println(v + " " + (n - v - f) + " " + f);
System.out.println(f + " " + (n - v - f) + " " + v);
int max = 0;
for (Map.Entry<Character, Integer> m : mapA.entrySet()) {
if (m.getValue() > max) {
max = m.getValue();
}
}
if (max == 0) {
System.out.print("B");
} else {
for (Map.Entry<Character, Integer> m : mapA.entrySet()) {
if (m.getValue() == max) {
System.out.print(m.getKey());
break;
}
}
}
max = 0;
System.out.print(" ");
for (Map.Entry<Character, Integer> m : mapB.entrySet()) {
if (m.getValue() > max) {
max = m.getValue();
}
}
if (max == 0) {
System.out.print("B");
} else {
for (Map.Entry<Character, Integer> m : mapB.entrySet()) {
if (m.getValue() == max) {
System.out.print(m.getKey());
break;
}
}
}
}
}
public static int match(char a, char b) {
if (a == b) {
return 0;
} else if ((a == 'C' && b == 'J') || (a == 'J' && b == 'B') || (a == 'B' && b == 'C')) {
return 1;
} else {
return -1;
}
}
}
编辑于 2020-03-10 21:27:53
回复(1)
import java.util.Scanner;
public class Main{
private static int shi(char a,char b) {
int p=0;
if((a=='B'&&b=='C')||(a=='C'&&b=='J')||(a=='J'&&b=='B')) {
p=1;
}
if((b=='B'&&a=='C')||(b=='C'&&a=='J')||(b=='J'&&a=='B')) {
p=-1;
}
return p;
}
private static void da(int b1,int c1,int j1) {
if(c1>j1) {
if(c1>b1) {
System.out.print("C");
}
else {
System.out.println("B");
}
}
else if(c1<j1){
if(j1>b1) {
System.out.print("J");
}
else {
System.out.print("B");
}
}
else {
if(c1>b1) {
System.out.print("C");
}
else {
System.out.print("B");
}
}
}
public static void main(String[] args) {
Scanner in=new Scanner(System.in);
while(in.hasNext()) {
int n=in.nextInt();
char[][]nn=new char[n][2];
for(int i=0;i<n;i++) {
for(int j=0;j<2;j++) {
nn[i][j]=in.next().charAt(0);
}
}
int []num=new int[3];
int []num1=new int[3];
int b1=0;
int c1=0;
int j1=0;
int b2=0;
int c2=0;
int j2=0;
for(int i=0;i<n;i++) {
if(shi(nn[i][0],nn[i][1])==1) {
num[0]++;
num1[2]++;
if(nn[i][0]=='B')b1++;
if(nn[i][0]=='C')c1++;
if(nn[i][0]=='J')j1++;
}
else if(shi(nn[i][0],nn[i][1])==0) {
num[1]++;
num1[1]++;
}
else {
num[2]++;
num1[0]++;
if(nn[i][1]=='B')b2++;
if(nn[i][1]=='C')c2++;
if(nn[i][1]=='J')j2++;
}
}
for(int s:num) {
System.out.print(s+" ");
}
System.out.println();
for(int s:num1) {
System.out.print(s+" ");
}
System.out.println();
da(b1,c1,j1);
System.out.print(" ");
da(b2,c2,j2);
}
}
}
发表于 2019-03-09 16:20:37
回复(0)
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Main {
private static int getMaxIndex(int[] arr) {
int maximumIndex = 0;
for(int i = 0; i < arr.length; i++) {
if(arr[i] > arr[maximumIndex]) {
maximumIndex = i;
}
}
return maximumIndex;
}
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int N = Integer.parseInt(br.readLine());
final String[] gesture = {"B" ,"C", "J"};
int[] ATime = {0, 0, 0};
int[] BTime = {0, 0, 0};
int[] AWinGesture = {0, 0, 0};
int[] BWinGesture = {0, 0, 0};
String[] game;
for(int i = 0; i < N; i++) {
game = br.readLine().split(" ");
switch(game[0]) {
case "C" :{
switch (game[1]) {
case "C":{
ATime[1]++;
BTime[1]++;
break;
}
case "J":{
ATime[0]++;
BTime[2]++;
AWinGesture[1]++;
break;
}
case "B":{
ATime[2]++;
BTime[0]++;
BWinGesture[0]++;
break;
}
default:break;
}
break;
}
case "J" :{
switch (game[1]) {
case "C":{
ATime[2]++;
BTime[0]++;
BWinGesture[1]++;
break;
}
case "J":{
ATime[1]++;
BTime[1]++;
break;
}
case "B":{
ATime[0]++;
BTime[2]++;
AWinGesture[2]++;
break;
}
default:break;
}
break;
}
case "B" :{
switch (game[1]) {
case "C":{
ATime[0]++;
BTime[2]++;
AWinGesture[0]++;
break;
}
case "J":{
ATime[2]++;
BTime[0]++;
BWinGesture[2]++;
break;
}
case "B":{
ATime[1]++;
BTime[1]++;
break;
}
default:break;
}
break;
}
default : break;
}
}
System.out.println(ATime[0] + " " + ATime[1] + " " + ATime[2]);
System.out.println(BTime[0] + " " + BTime[1] + " " + BTime[2]);
System.out.println(gesture[getMaxIndex(AWinGesture)] + " " + gesture[getMaxIndex(BWinGesture)]);
}
}
发表于 2017-11-15 18:07:54
回复(0)
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