Java_上机1

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编程题目

  • 注意
    1. 下面代码块直接复制粘贴应该就可以通过
    2. 如果显示的是没有通过（如：unknown erro,wrong erro….）建议在评判界面等10秒左右，因为系统判定会有延迟。
    3. 如果对于改题您有更好的解决方式，欢迎联系本人

1.判断并显示闰年

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public class Main {
    public static void main(String[] args) {
        int yearNum = 2000;
        for (int i = 0; yearNum < 2100; yearNum++) {
            if(yearNum%4 == 0){
                if(i == 5){
                    System.out.println();
                    i = 0;
                }
                System.out.print(yearNum+" ");
                i++;
            }
        }
    }
}

2.整数拆分求立方

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import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        int sum = 0;
        Scanner scanner = new Scanner(System.in);
        int scanNum;
        while (scanner.hasNext()) {
            sum = 0;
            scanNum = scanner.nextInt();
            while (scanNum != 0) {
                sum += (scanNum % 10) * (scanNum % 10) * (scanNum % 10);
                scanNum = scanNum / 10;
            }
            System.out.print(sum);
        }
    }
}

3.编写程序，输出成绩提高的百分比。

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import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        double rate = 0;
        double a,b;
        Scanner scanner = new Scanner(System.in);
        int scanNum=1;
        while (scanner.hasNext()) {
            a = scanner.nextDouble();
            b = scanner.nextDouble();
            rate = (b-a)/a;
            System.out.print(String.format("%.2f", rate*100)+"%");
        }
    }
}

4.a+b

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import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        int a,b;
        int sum = 0;
        Scanner scanner = new Scanner(System.in);
        while(scanner.hasNext()){
            a = scanner.nextInt();
            b = scanner.nextInt();
            sum = a + b;
            System.out.print(sum);
        }
    }
}

5.输出时间

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import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        int a;
        int HH,MM,SS;
        Scanner scanner = new Scanner(System.in);
        a = scanner.nextInt();
        SS = a % 60;
        MM = ((a-SS)/60) % 60;
        HH = a/3600;
        System.out.print(HH+" "+MM+" "+SS);
        while(scanner.hasNext()){
            System.out.println();
            a = scanner.nextInt();
            SS = a % 60;
            MM = ((a-SS)/60) % 60;
            HH = a/3600;
            System.out.print(HH+" "+MM+" "+SS);

        }
    }
}

6.摄氏温度和华氏温度的转换

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import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        double huaShiTemperature;
        double sheShiTemperature;
        Scanner scanner = new Scanner(System.in);
        while(scanner.hasNext()){
            sheShiTemperature = scanner.nextDouble();
            huaShiTemperature = (double)sheShiTemperature*9/5+32;
            System.out.print(String.format("%.2f", huaShiTemperature));
        }
    }
}

7. 输出天数

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import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        int year,month,day;
        int sum;
        int[] a = new int[13];
        a[1] = 31;
        a[2] = 28;
        a[3] = 31;
        a[4] = 30;
        a[5] = 31;
        a[6] = 30;
        a[7] = 31;
        a[8] = 31;
        a[9] = 30;
        a[10] = 31;
        a[11] = 30;
        a[12] = 31;
        Scanner scanner = new Scanner(System.in);
        while(scanner.hasNext()){
            sum = 0;
            year = scanner.nextInt();
            month = scanner.nextInt();
            day = scanner.nextInt();
            if(year % 4 == 0){
                a[2] = 29;
            }
            for (int i = 1; i < month ; i++) {
                sum += a[i];
            }
            sum += day;
            System.out.print(sum);
        }
    }
}

8. 求绝对值

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import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        double num;
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNext()){
            num = scanner.nextDouble();
            num = abs(num);
            System.out.println(String.format("%.2f",num));
        }
    }

    private static double abs(double num) {
        if (num < 0){
            return -num;
        }
        return  num;
    }
}