For循环练习

public class For02 {
    public static void main(String[] args) {


        //计算0到100之间的奇数和、偶数和
        int oddSum = 0;
        int evenSum = 0;
        for (int i = 0; i <= 100; i++) {
            if (i%2!=0){//奇数
                oddSum+=i;//oddSum=oddSum+i
        }else{//否则为偶数
                evenSum+=i;//evenSum=evenSum+i
            }
        }
        System.out.println("奇数的和:"+oddSum);
        System.out.println("偶数的和:"+evenSum);


        //用while或for循环输出1-1000之间能被5整除的数，并且每行输出3个
        for (int i = 1; i <= 1000; i++) {
            if (i%5==0){ //被5整除
                System.out.print(i+"\t");//print-不换行 实现空格：\t
            }
            if (i%(5*3)==0){//每第三个数都能被15整除
                System.out.println();//printLn-换行
                //或者System.out.print(“\n“);
            }
        }


        //99乘法表
        for (int j = 1; j <= 9; j++) {
            for (int i = 1; i <= j; i++) {
                System.out.print(j+"*"+i+"="+(j*i)+"\t");
        }
            System.out.println();
        }


        for (int j = 1; j <= 9; j++) {
            for (int i = 1; i <= j; i++) {
                System.out.print(j+"*"+i+"="+(j*i)+"\t");//嵌套里面空格不换行
        }
            System.out.println();//嵌套外换行
        }
    }
}