public class NumberPyramid {
    public static void printNumberPyramid(Integer rows) {
        // Iterate through each row of the pyramid
        for (Integer i = 1; i <= rows; i++) {
            // Print leading spaces
            for (Integer j = 1; j <= rows - i; j++) {
                System.debug(' ');
            }
            // Print numbers in increasing order
            for (Integer k = 1; k <= i; k++) {
                System.debug(k);
            }
            // Print numbers in decreasing order
            for (Integer l = i - 1; l >= 1; l--) {
                System.debug(l);
            }
            // Move to the next line
            System.debug('\n');
        }
    }
}

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