54.螺旋矩阵（中）

• 题目
• 模拟

题目

模拟

class Solution:
    def spiralOrder(self, matrix: List[List[int]]) -> List[int]:
        m, n = len(matrix), len(matrix[0])
        res = []
        top, bottom = 0, m - 1
        left, right = 0, n - 1
        while top <= bottom and left <= right:
            # 遍历上边界
            for i in range(left, right + 1):
                res.append(matrix[top][i])
            top += 1
            # 遍历右边界
            for i in range(top, bottom + 1):
                res.append(matrix[i][right])
            right -= 1
            # 遍历下边界
            if top <= bottom:
                for i in range(right, left - 1, -1):
                    res.append(matrix[bottom][i])
                bottom -= 1
            # 遍历左边界
            if left <= right:
                for i in range(bottom, top - 1, -1):
                    res.append(matrix[i][left])
                left += 1
        return res