제5장 수업 후 연습 문제

import java.util.Scanner;
public class Answer {
    public static int func1(int n) {
        int i = 0;
        int m = 1;
        for (i = 1; i <= n; i++) {
            m = m * i;
        }
        System.out.println("n ："+m);
        return m;
    }
}

public class Exercise_05_02 {
    public static void main(String[] args) {
        Exercise_05_02.method1(2012);
    }
    
    public static void method1(int year) {
        
if(year%4==0&&year%100!=0||year%400==0){
    System.out.println(" "); 
}else{
    System.out.println(" ");
} 

    }


}

public class Exercise_05_03 {
    public static void main(String[] args) {
        Exercise_05_03.method1();
    }
    
    public static void method1() {
        // TODO Auto-generated method stub
        for (int i = 200; i < 300; i++) {
            boolean b = true;
            for (int j = 2; j < i; j++) {
                if (i % j == 0) {
                    b = false;
                    break;
                }
            }
            if (!b) {
                continue;
            }
            System.out.println(i);
            break;
        }
    }


}

public class Exercise_05_04 {
    public static void main(String[] args) {
        int[] array = { 1, 6, 2, 3, 9, 4, 5, 7, 8 };
        sort(array);
        print(array);
    }

    public static void sort(int[] data) {
        //   　　
        int len = data.length;
        int temp = data[0]; //  
        for (int i = 1; i < len; i++) {
            for (int j = 1; j  data[j + 1]) {
                    temp = data[j];
                    data[j] = data[j + 1];
                    data[j + 1] = temp;
                }
            }
        }
    }

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