Spiral Matrix
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Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order.
For example,
Given the following matrix:
[
[ 1, 2, 3 ],
[ 4, 5, 6 ],
[ 7, 8, 9 ]
]
You should return [1,2,3,6,9,8,7,4,5].
注意m、n作为标识量(or 状态量),控制着循环状态转移
class Solution {
public:
vector<int> spiralOrder(vector<vector<int> > &matrix) {
vector&l......
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