JAVA For

For格式

for(初始化；布林表示式；更新){
    //程式碼語句
}

01

package JAVASE.struct;

public class For01 {
    public static void main(String[] args) {
        //  初始化；條件判斷；更新
        for (int i =1;i<=100;i++){
            System.out.println(i);
        }
        System.out.println("for迴圈結束");
        }
    }

02

package JAVASE.struct;

public class For02 {
    public static void main(String[] args) {
        //計算0到100之間的奇數和偶數的和
        int os = 0;
        int es = 0;
        for (int i = 0; i <= 100; i++) {
            if (i%2!=0){
                os+=i;
            }else {
                es+=i;
            }
        }
        System.out.println("os:"+os);
        System.out.println("es:"+es);
    }
}

 

03

package JAVASE.struct;

public class For03 {
    public static void main(String[] args) {
        //輸出1-1000之間能被5整除的數，每行三個
        for (int i = 0; i <= 1000; i++) {
            if (i%5==0){
                System.out.print(i+"\t");
            }
            if (i%(5*3)==0){
                System.out.println();
            }
        }
    }
}

 

2021.8.8