How do you combine spaces and hollow logic?
First, use an inner loop to print the required leading spaces to align the shape. Then, use a second inner loop with if-else boundary checks to draw the hollow interior.
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More FAQs in Advanced Hollow Patterns (Hollow Pyramid)
Inside the star loop, the boundaries are the first column (col == 1), the last column (col == 2*row - 1), and the final row (row == N).
Because once the leading spaces have aligned the shape, the hollow center of the pyramid must be filled with blank spaces to push the right-side stars to their correct positions.
Yes, you can use pure coordinate logic on a full rectangular grid, but calculating the diagonal boundaries mathematically is often much harder than the multi-loop approach.
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