Python 3.14 (Coding): Spiral Matrix II Test

The problem is to iteratively updates boundaries while placing numbers in the matrix, following a spiral pattern. This problem has practical applications in grid-based simulations and graphics. Initialize a 2D vector ret of size "n x n" to store the generated matrix.

Initialize a variable k to 1, representing the current number to be placed in the matrix.

Initialize a variable i to 0, which represents the current layer or "ring" of the spiral.

Enter a while loop that continues until k exceeds the maximum value, which is "n x n."

Within the loop, iterate through each side of the current layer of the spiral using four nested while loops.

The first loop moves from left to right along the top row of the current layer, filling it with consecutive numbers from k to n - i.

The second loop moves from top to bottom along the rightmost column of the current layer.

The third loop moves from right to left along the bottom row of the current layer.

The fourth loop moves from bottom to top along the leftmost column of the current layer.

After each loop, the value of k is incremented, ensuring that the next number is placed in the matrix.

Finally, i is incremented to move to the next inner layer of the spiral.

The function returns the filled matrix ret once the loop completes.

This code efficiently generates a spiral matrix with consecutive numbers in the specified order and is a valid solution to the "Spiral Matrix II" problem.