The inner loop will lose its dynamic dependency and will always print N stars, resulting in a square instead of a triangle.

Yes, simply replace the print statement. If you print 'col', it will output '1', '12', '123'. If you print 'row', it will output '1', '22', '333'.

Question 1

How does this pattern relate to generating unique array pairs?

Accepted Answer

The loop structure (inner loop tied to outer loop state) is identical to the logic used to avoid self-pairing in the Two Sum brute-force approach.

Question 2

What is the key to printing a right-angled triangle?

Accepted Answer

The key is making the inner loop's termination condition dynamically dependent on the outer loop's counter (e.g., col <= row).

Question 3

What happens if I write col <= n instead of col <= row?

Accepted Answer

The inner loop will lose its dynamic dependency and will always print N stars, resulting in a square instead of a triangle.

Question 4

Can I print numbers instead of stars?

Accepted Answer

Yes, simply replace the print statement. If you print 'col', it will output '1', '12', '123'. If you print 'row', it will output '1', '22', '333'.

How does this pattern relate to generating unique array pairs?

More FAQs in How to Print a Right-Angled Triangle Pattern