Question

never thought i had issues with nested loops well here Iam: What i want to achieve is this: Given two number A and B i need to find all counting numbers between 1 and the A*B for example A=4 B=3 i need this:

      1 2 3
      4 5 6
      7 8 9
      10 11 12

I wrote the initial parts but i can’t figure out how can i write down the value which changes in every row

      for(int i=1; i<=A; i++){
                 for(int j=1; j<=B; j++){
                      System.out.println("?");}}

Having A*B gives me

    1 2 3
    2 4 6
    3 6 9
    4 8 12

I tried some other combinations too but to no luck, It might look straight forward but its the first time i’m facing this. Thanks in advance!

Answer 1

You can try (i-1)*B + j.

Another option is to just use 1 for loop:

int limit = A * B;
for (int i = 1; i <= limit; i++) {
    System.out.print(i + " ");
    if (i % B == 0) {
        System.out.println();
    }
}