lc054

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Published: Aug 9, 2023 License: GPL-3.0 Imports: 0 Imported by: 0

README

54.螺旋矩阵

1. 题目描述

给你一个 mn 列的矩阵  matrix ,请按照 顺时针螺旋顺序 ,返回矩阵中的所有元素。

 

示例 1:


输入:matrix = [[1,2,3],[4,5,6],[7,8,9]]
输出:[1,2,3,6,9,8,7,4,5]

示例 2:


输入:matrix = [[1,2,3,4],[5,6,7,8],[9,10,11,12]]
输出:[1,2,3,4,8,12,11,10,9,5,6,7]

 

提示:

  • m == matrix.length
  • n == matrix[i].length
  • 1 <= m, n <= 10
  • -100 <= matrix[i][j] <= 100

标签 数组 矩阵 模拟

2. 解题

模拟螺旋矩阵的路径。初始位置是矩阵的左上角,初始方向是向右,当路径超出界限或者进入之前访问过的位置时,顺时针旋转,进入下一个方向。直至遍历完。

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