The answer
Using mathematical bounds inside the for-loop condition is cleaner, much faster, and scales perfectly for any value of N, unlike hardcoded if-statements.
Using Mathematical Formulas to Control Loop Bounds
Why do we use math instead of multiple if statements?
More FAQs in Using Mathematical Formulas to Control Loop Bounds
Map the row number (X) to the star count (Y). Find the difference between Y values (the slope), and use basic algebra (y = mx + b) to find the formula.
The formula is (2 * row) - 1, assuming your row counter starts at 1.
The formula is exactly 2 * row, which prints 2, 4, 6, 8 stars progressively.
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