蓝桥杯打卡day13（3.16）

[墨离]

目录

• 1.特殊日期
• 2.重合次数
• 3.左移右移

1.特殊日期

package lanqiaobei.exe.day13;

import java.util.Scanner;

public class 特殊日期01 {
    static int[] days = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int y = 1900;
        int m = 1;
        int d = 1;
        long ans = 0;
        while (true) {
            if (y == 9999 && m == 12 && d == 31){
                break;
            }
            if (isEqual(y,m,d))ans++;
            if (y % 4 == 0 && y % 100 != 0 || y % 400 == 0) {
                days[2] = 29;
            } else days[2] = 28;
            if (d == days[m]) {
                d = 1;
                if (m == 12) {
                    m = 1;
                    y++;
                } else m++;
            } else d++;
        }
        System.out.println(ans);
    }

    static boolean isEqual(int y,int m,int d){
        int a = 0;
        int b = 0;
        while (y!=0){
            a += y % 10;
            y/=10;
        }
        while (m!=0){
            b += m % 10;
            m/=10;
        }
        while (d!=0){
            b += d % 10;
            d/=10;
        }
        return a==b ;
    }
}

2.重合次数

public class 重合次数 {
    public static void main(String[] args) {
        int h = 6;
        int m = 13;
        int s = 22;
        int ans = 0;
        while (true){
            if(s == m)ans++;
            if(h == 14 && m == 36 && s == 20)break;
            s++;
            if(s == 60){
                s = 0;
                m++;
                if (m == 60){
                    m = 0;
                    h++;
                }
            }

        }
        System.out.println(ans - 14 + 6);
    }
}

3.左移右移

import java.io.*;
import java.util.*;
public class 左移右移 {
    static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    static PrintWriter pr = new PrintWriter(new OutputStreamWriter(System.out));
    public static void main(String[] args) throws IOException {
        String[] s = br.readLine().trim().split(" ");
        int n = Integer.parseInt(s[0]);
        int m = Integer.parseInt(s[1]);
        Node[] nodes = new Node[n+1];
        for (int i = 1; i <= n;  i++){
            nodes[i]  =new Node(i,i);
        }
        int cnt1 = -1;
        int cnt2 = (int) 2e6+1;
        for (int i = 0; i < m; i++) {
            s = br.readLine().trim().split(" ");
            int v = Integer.parseInt(s[1]);
            if("L".equals(s[0])){
                nodes[v].y = cnt1--;
            }
            if("R".equals(s[0])){
                nodes[v].y = cnt2++;
            }
        }
        Arrays.sort(nodes,1,n+1);
        for (int i = 1; i <= n; i++) {
            System.out.print(nodes[i].x + " ");
        }
    }
}
class Node implements Comparable<Node>{

    int x;
    int y;

    public Node(int x,int y){
        this.x = x;
        this.y = y;
    }
    @Override
    public int compareTo(Node o) {
        if (o.y != y)return y - o.y;
        return x - o.x;
    }
}