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Leetcode 1284 Minimum Number of Flips to Convert Binary Matrix to Zero Matrix
時間 2020-08-04
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minimum
number
flips
convert
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matrix
zero
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題意:給定一個01矩陣,每次能夠翻轉一個數字,同時它的上下左右也會翻轉,求最少翻轉次數使得矩陣全爲1code 題解:n <=3, m <= 3,狀壓dp表示第i,j個座標是否翻轉,求最小次數便可。ip AC代碼:it class Solution { public: int minFlips(vector<vector<int>>& mat) { int n = mat.s
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