取余数运算

package day03;

/**

 * 取余数运算 %

 * 1) 负数的余数是负数或0

 * 2）正数方向，余数是周期函数

 * 3）取余运算常常用于处理周期性现象

 */

public class Demo08 {

    public static void main(String[] args) {

      int a = 5;

      int b = 2;

      int c = a % b;//5/2  得2余1

      System.out.println(c);//1

      

      System.out.println(-4%3);// -4/3  得-1余-1

      System.out.println(-3%3);//0

      System.out.println(-2%3);// -2/3  得0余-2

      System.out.println(-1%3);// -1/3  得0余-1

      System.out.println(0%3);// 0/3  得0余0

      System.out.println(1%3);//1

      System.out.println(2%3);//2

      System.out.println(3%3);//0

      System.out.println(4%3);//1

      System.out.println(5%3);//2

      System.out.println(6%3);//0

      System.out.println(7%3);//1

      System.out.println(8%3);//2

      

    }

}