54. 螺旋矩阵 (opens new window)

Description

Difficulty: 中等

Related Topics: 数组 (opens new window), 矩阵 (opens new window), 模拟 (opens new window)

给你一个 m 行 n 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

Solution

Language: JavaScript

/**
 * @param {number[][]} matrix
 * @return {number[]}
 */
var spiralOrder = function(matrix) {
    let n = []
    while (matrix.length) {
        n = _.concat(n, matrix.shift())
        matrix = _.reverse(_.zip(...matrix))
    }
    return n
};