Java学习笔记9

package zh.codegym.task.task04.task0411;



public class Solution {

    public static void main(String[] args) {
        checkSeason(12);
        checkSeason(4);
        checkSeason(7);
        checkSeason(10);
    }

    public static void checkSeason(int month) {
        if(month >= 3 && month <= 5){
            System.out.println("春季");
        }else if(month >= 6 && month <= 8){
            System.out.println("夏季");
        }else if(month >= 9 && month <= 11){
            System.out.println("秋季");
        }else{
            System.out.println("冬季");
        }
        //在此编写你的代码
    }
}

package zh.codegym.task.task04.task0412;



import java.io.*;

public class Solution {
    public static void main(String[] args) throws Exception {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String sNum = reader.readLine();
        int num = Integer.parseInt(sNum);
        if (num > 0){
            num *= 2;
        }else if(num < 0){
            num += 1;
        }
        System.out.println(num);
        //在此编写你的代码

    }

}

package zh.codegym.task.task04.task0413;



import java.io.*;

public class Solution {
    public static void main(String[] args) throws Exception {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String sNum = reader.readLine();
        int num = Integer.parseInt(sNum);
        if(num == 1){
            System.out.println("星期一");
        }else if(num == 2){
            System.out.println("星期二");
        }else if(num == 3){
            System.out.println("星期三");
        }else if(num == 4){
            System.out.println("星期四");
        }else if(num == 5){
            System.out.println("星期五");
        }else if(num == 6){
            System.out.println("星期六");
        }else if(num == 7){
            System.out.println("星期日");
        }else{
            System.out.println("一周中没有这一天");
        }
        //在此编写你的代码
    }
}

package zh.codegym.task.task04.task0414;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;



public class Solution {

    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        int days = Integer.parseInt(reader.readLine());

        if (days % 4 == 0) {
            if ((days % 100 == 0) && (days % 400 != 0)) {
                days = 365;
            } else {
                days = 366;
            }
        } else {
            days = 365;
        }

        System.out.println("这一年包含的天数：" + days);
    }
}

package zh.codegym.task.task04.task0415;



import java.io.*;

public class Solution {
    public static void main(String[] args) throws Exception {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String sA = reader.readLine();
        String sB = reader.readLine();
        String sC = reader.readLine();
        int a = Integer.parseInt(sA);
        int b = Integer.parseInt(sB);
        int c = Integer.parseInt(sC);
        if(a + b > c && a + c > b && b + c > a){
            System.out.println("三角形可能存在。");
        }else{
            System.out.println("三角形不可能存在。");
        }
        //在此编写你的代码
    }
}

package zh.codegym.task.task04.task0416;



import java.io.*;

public class Solution {
    public static void main(String[] args) throws Exception {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String sNum = reader.readLine();
        double num = Double.parseDouble(sNum);
        num = num % 5;
        if(num >= 0 && num < 3){
            System.out.println("绿色");
        }else if(num >= 3 && num < 4){
            System.out.println("黄色");
        }else{
            System.out.println("红色");
        }
                //在此编写你的代码
    }
}

package zh.codegym.task.task04.task0417;



import java.io.*;

public class Solution {
    public static void main(String[] args) throws Exception {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String sA = reader.readLine();
        String sB = reader.readLine();
        String sC = reader.readLine();
        int a = Integer.parseInt(sA);
        int b = Integer.parseInt(sB);
        int c = Integer.parseInt(sC);
        if(a == b && b == c){
            System.out.println(a + " " + b + " " + c);
        }else if(a == b){
            System.out.println(a + " " + b );
        }else if(b == c){
            System.out.println(b + " " + c);
        }else if(a == c){
            System.out.println(a + " " + c);
        }
        //在此编写你的代码
    }
}