Can I print numbers instead of stars?
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'.
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More FAQs in How to Print a Right-Angled Triangle Pattern
The key is making the inner loop's termination condition dynamically dependent on the outer loop's counter (e.g., col <= row).
The inner loop will lose its dynamic dependency and will always print N stars, resulting in a square instead of a triangle.
It is O(N^2). Even though the inner loop runs fewer times initially, mathematically it executes roughly (N^2)/2 times, which simplifies to O(N^2).
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