Java流程控制：用for循环或while循环计算1~100的和

用for循环计算1~100的和

public class ForDemo03 {
    //用for循环计算1~100的和
    public static void main(String[] args) {
        int oddsum = 0;//奇数和
        int evensum = 0;//偶数和
        for (int i = 1; i <= 100; i++) {
            if(i%2!=0){
                oddsum+=i;
            }else{
                evensum+=i;
            }
        }
        System.out.println(oddsum);
        System.out.println(evensum);
    }
}

用while循环计算从1~100的和

public static void main(String[] args) {
        int i = 1;
        int sum = 0;
        while(i<=100){
            sum = i+sum;
            i++;
            
        }
        System.out.println(sum);
    }