第十三届蓝桥杯国赛JavaB组个人复习题解

A;重合次数

package no13_guosai;

public class test1 {
    public static void main(String[] args) {
        int i=22,j=13,k=6;
        int sum=0;
        for ( ;;i++){
            if (i==60){
                i=0;
                j++;
            }
            if (j==60){
                j=0;
                k++;
            }
            if (i==j) sum++;
            if (i==20&&j==36&&k==14){
                System.out.println(sum);
                System.exit(0);
            }
        }
    }
}

我的答案502,正确答案494,为什么多了8次?因为有8次是时针分针秒针都重合的,这题目也没说三个都重合也不算啊,不理解 

B:数数

import java.util.Scanner;

public class test2 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n,m;
        int sum=0;
        n=scanner.nextInt();
        m=scanner.nextInt();
        String[] s=new String[m];
        for (int i = 0; i < m; i++) {
            s[i]=((Integer)scanner.nextInt()).toString();
        }
        for (int i = 1; i < n; i++) {
            String number=new  Integer(i).toString();

            for (int j = 0; j <= m; j++) {
                if (j!=m&&number.contains(s[j])){
                    break;
                }
                if (j==m) {
//                    System.out.println(i);
//                    System.out.println("....");
                    sum++;
                }
            }
        }
        System.out.println(sum);
    }
}

C:左移右移

import java.util.Scanner;

public class test3 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int N=scanner.nextInt();
        int M=scanner.nextInt();
        scanner.nextLine();
        int arg[]=new int[N];
        for (int i = 0; i < N; i++) {
            arg[i]=i+1;
        }

        for (int i = 0; i < M; i++) {
            String s=scanner.nextLine();

            char c0=s.charAt(0);
            char c2=s.charAt(2);


            if (c0=='L'){
                lift(arg,c2);
            }
            else right(arg,c2);

        }

        for (int i = 0; i < arg.length; i++) {
            System.out.print(arg[i]+" ");
        }

    }
    static void lift(int[] a,int x){
        x-=48;
        int address =0;
        for (int i = 0; i 0; i--) {
            a[i]=a[i-1];

        }
        a[0]=x;
    }
    static void right(int[] a,int x){
        x-=48;
        int address =0;
        for (int i = a.length-1; i >=0 ; i--) {
            if (a[i]==x) address =i;
        }
        for (int i = address; i