Given an integer n, return the n rows of a centered, symmetric star pyramid — row i has (n − i) leading spaces, then (2i − 1) stars. Unlike the Right Half Pyramid (which grows by 1 star per row and is left-aligned), this pyramid grows by 2 stars per row — one on each side — which is exactly what keeps it centered and symmetric. The nested loopsNested LoopsAn outer loop over rows, one inner loop for the leading spaces, another for the (2i-1) stars. version builds each half explicitly; the built-in repetitionBuilt-in RepetitionBuilding the space-padding and the stars each with a repeat call, then concatenating the two pieces. version replaces both inner loops with two built-in calls.