spiral matrix II

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 1from typing import List
 2
 3class Solution:
 4    def generateMatrix(self, n: int) -> List[List[int]]:
 5        s = n * n
 6        m = [[s]]
 7        if n == 1:
 8            return [[1]]
 9        while True:
10            m = [[*reversed(x)] for x in zip(*m)]
11            m.insert(0, [*range(s-len(m[0]), s)])
12            s -= len(m[0])
13            if s <= 1:
14                break
15        return m