拼多多8.02服务端笔试

四题情况：

第一题 96%
第二题 100%
第三题 50%
第四题 0

代码

Q1

第一题大佬帮我看看还有什么情况，我剩下4%的样例实在是没想出来

import java.util.Scanner;

public class Main1 {
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        int K = in.nextInt();
        int N = in.nextInt();
        int count = 0;
        int dis = K;
        int flag = 0;
        if(K==0){
            flag = 1;
        }
        for(int i = 1 ; i <= N ; i++){
            int tmp = in.nextInt();
            if(tmp == dis){
                flag = 1;
                break;
            }
            if(tmp < dis){
                dis = dis - tmp;
            }else{
                dis = tmp - dis;
                count += 1;
            }
        }

        if(flag == 1){
            System.out.println("paradox");
        }else{
            System.out.println(dis + " "+count);
        }
    }
}

Q2

第二题我直接用面向对象的思想做了，写的有点麻烦了，直接写了个色子类

package PDD_exam;

import java.util.HashMap;
        import java.util.Scanner;
        import java.util.Arrays;
class ball{
    int up;
    int front;
    int right;
    int down;
    int back;
    int left;
    public ball(int u , int d, int l , int r , int f, int b){
        up = u;
        front = f;
        right = r;
        down = d;
        back = b;
        left = l;
    }

    public void turn_front(){
        int tmp = this.front;
        this.front = this.up;
        this.up = this.back;
        this.back = this.down;
        this.down = tmp;
    }

    public void turn_right(){
        int tmp = this.up;
        this.up = this.left;
        this.left = this.down;
        this.down = this.right;
        this.right = tmp;
    }

    public void turn_shun(){
        int tmp = this.front;
        this.front  = this.right;
        this.right = this.back;
        this.back = this.left;
        this.left = tmp;
    }

    public boolean judge(ball test){
        //  System.out.print("yeee");
        if(this.up == test.up){
            if(this.down != test.down){
                return false;
            }
            if(this.equals(test)){
                return true;
            }
            test.turn_shun();
            if(this.equals(test)){
                return true;
            }
            test.turn_shun();
            if(this.equals(test)){
                return true;
            }
            test.turn_shun();
            if(this.equals(test)){
                return true;
            }
            return false;
        }else{
            test.turn_front();
            if(test.up == this.up){
                return this.judge(test);
            }
            test.turn_front();
            if(test.up == this.up){
                return this.judge(test);
            }
            test.turn_front();
            if(test.up == this.up){
                return this.judge(test);
            }
            test.turn_front();
            if(test.up == this.up){
                return this.judge(test);
            }
            test.turn_right();
            if(test.up == this.up){
                return this.judge(test);
            }
            test.turn_right();
            if(test.up == this.up){
                return this.judge(test);
            }
            test.turn_right();
            if(test.up == this.up){
                return this.judge(test);
            }
            test.turn_right();
            if(test.up == this.up){
                return this.judge(test);
            }
            return false;
        }
    }

    public void print(){
        System.out.println(up + " " + down + " " + left + " " +right + " " + front + " " + back);
    }
    @Override
    public boolean equals(Object other) {
        return (this.up == ((ball)other).up && this.front == ((ball)other).front && this.right == ((ball)other).right  && this.back == ((ball)other).back && this.left == ((ball)other).left && this.down == ((ball)other).down);
    }

}
public class Main2 {
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        HashMap<ball , Integer> map = new HashMap<>();
        int num = in.nextInt();
        for(int i = 0 ; i < num ; i++){
            int up = in.nextInt();
            int down = in.nextInt();
            int left = in.nextInt();
            int right = in.nextInt();
            int front = in.nextInt();
            int back = in.nextInt();
            ball tmp = new ball(up,down,left,right,front,back);
            int flag = 0;
            for(ball test : map.keySet()){

                if(test.judge(tmp)){
                    map.put(test,map.get(test)+1);
                    flag = 1;
                    break;
                }
            }
            if(flag == 0){
                map.put(tmp,1);
            }
        }
        int count = map.size();
        System.out.println(count);
        int[] res = new int[count];
        int index = 0;
        for(ball test:map.keySet()){
            res[index] = map.get(test);
            index += 1;
        }
        Arrays.sort(res);
        for(int i = res.length - 1 ; i >= 0 ; i--){
            if(i == res.length - 1){
                System.out.print(res[i]);
            }else{
                System.out.print(" "+res[i]);
            }
        }
    }
}