如何在java中每行打印10个数字

Question

I have a simple but hard problem and wanted to get your help on this. This is the code:

int i = 0; 
while (i < 100) {
      i++; 
     System.out.print(i);
}

This is the real issue that I'm having, how do I control the println to display how many numbers per line that I want so I don't just see 100 numbers in a row straight? Btw please if at all possible, don't give me the answer but help me to answer it myself instead.

Answer 1

while loops? Why not use for loops? They are much better in this kind of situation ie when you want to repeat something a known number of times.

You can use a nested for loop to make this happen:

int counter = 0;
for (int i = 0 ; i < 10 ; i++) {
    for (int j = 0; j < 10 ; j++) {
        System.out.print (counter);
        System.out.print (" "); // I think it is best to have spaces between the numbers
        counter++;
    }
    //after printing 10 numbers, go to a new line
    System.out.println ();
}

Answer 2

You could do something like:

    for(int number = 0; number <= 100; number++) {
        if(number % 10 == 0 && number > 0)
            System.out.println(number);
        else
            System.out.print(number + " ");
    }

This would create 10 rows of 10 numbers.

Answer 3

Try this one

if (i%10==1){
     System.out.println("");
 }