for循环应用场景

package com.karl;

import com.sun.net.httpserver.SimpleFileServer;

public class forDemo {
    //应用场景
    //减少代码的重复编写，灵活的控制程序的执行
    //打印多行HelloWord
    public static void main(String[] args) {
        for (int i = 0;i<5;i++){
            System.out.println("王大锤");
        }
        System.out.println("___________________________________");


        for (int i=1;i<=10;i+=2){
            //1 3 5 7 9  5次
            System.out.println("王大锤1");
        }
        System.out.println("___________________________________");


        for (int i=1;i<=10;i*=2){
            //1 2 4 8  4次
            System.out.println("王大锤+6");
        }
        System.out.println("___________________________________");


        for (int i=1;i<=100;i++){
            System.out.println(i);
        }
        System.out.println("___________________________________");


        //求和循环
        //定义一个变量
        int sum= 0;
        //定义循环
        for (int  i = 1;  i< 5; i++) {
            //1 2 3 4 5
            sum+=i;
            //sum=sum+1;

        }
        System.out.println("和"+sum);
        System.out.println("___________________________________");

        //求奇数和
        int sum1  =0;
        for (int i = 1; i < 100; i+=2) {
            //1 3 5 7 ....
            sum1 += i;
        }
        System.out.println("奇数和："+sum1);


        System.out.println("___________________________________");

        int sum2=0;
        for (int i = 1; i < 100; i++) {
            //1 2 3  4 5 6 7 ..... 99 100
            //使用if分支，判断i此时记住的数据是否为奇数，是奇数我们才累加给一个变量
            if(i % 2 == 1){
                //1 3 5 7 9..99
                sum2+=i;
            }
            System.out.println("奇数和："+sum2);
        }













    }
}