Java 如何每三个数字打印一次？

如何每三个数字打印一次

我知道这将打印出从0到100的数字：

package WhileStatement;

import java.util.Scanner;

public class WhileStatementOne {

        //See the Scanner packet for more info.
    static Scanner input = new Scanner(System.in);
    public static void main(String[] args){
        countNumber();
    }
        //We can now call ' countNumber ' at any time in this code.
    private static void countNumber(){
        // This is the whilestatement.
        int i = 0;
        while(i <=100){
            System.out.println(i);
            i++;
        }
    }
}

尝试：

int i = 1;
while (i++ <= 100){
    if ( i % 3 == 0 ) {
        System.out.println(i);
    }
}

增加3

private static void countNumber(){
    // This is the whilestatement.
    int i = 3;
    while(i <=100){
        System.out.println(i);
        i+=3;
    }

}

用于：

输出：

3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 66 69 72 75 78 81 84 87 90 93 96 99

---

这个循环不好。但不改变你的流量。只需添加一个条件来统计您想要的内容

int i = 0;
    while (i <= 100) {
        if (i != 0 && i % 3 == 0)
            System.out.println(i);
        i++;
    }

---

从i=3开始，每轮加3？System.out.printlni*3@Ingo那你应该@ᴍ阿伦ᴍaroun是的，或者我*3@ᴍ阿伦ᴍ最后一个例子只是说明问题可以通过多种方式解决-

    int i = 3;
    while(i <=100){
        System.out.println(i);
        i += 3;
    }

private static void countNumber(){
    // This is the whilestatement.
    int i = 3;
    while(i <=100){
        System.out.println(i);
        i+=3;
    }

}

for (int i = 3; i <= 100; i+=3)
{
    System.out.println(i);
}

IntStream.iterate(3, x -> x + 3).limit(100/3).forEach(System.out::println);

3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 66 69 72 75 78 81 84 87 90 93 96 99

int i = 0;
    while (i <= 100) {
        if (i != 0 && i % 3 == 0)
            System.out.println(i);
        i++;
    }

public static void main(String[] args) {
    for(int i=3; i < 100; i = i + 3) {
        System.out.println(i);
    }
}