801. Minimum Swaps To Make Sequences Increasing 為使兩個數組嚴格遞增,所需要的最小交換次數

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[抄題]:

We have two integer sequences A and B of the same non-zero length.

We are allowed to swap elements A[i] and B[i].  Note that both elements are in the same index position in their respective sequences.

At the end of some number of swaps, A and B are both strictly increasing.  (A sequence is strictly increasing if and only if A[0] < A[1] < A[2] < ... < A[A.length - 1].)

Given A and B, return the minimum number of swaps to make both sequences strictly increasing.  It is guaranteed that the given input always makes it possible.

Example:Input: A = [1,3,5,4], B = [1,2,3,7]Output: 1Explanation: Swap A[3] and B[3].  Then the sequences are:A = [1, 3, 5, 7] and B = [1, 2, 3, 4]which are both strictly increasing.

 [暴力解法]:

時間分析:

空間分析:

 [最佳化後]:

時間分析:

空間分析:

[奇葩輸出條件]:

[奇葩corner case]:

[思維問題]:

對dp很恐懼,不知道交換以後應該怎麼檢查

[英文資料結構或演算法,為什麼不用別的資料結構或演算法]:

[一句話思路]:

[輸入量]:空: 正常情況:特大:特小:程式裡處理到的特殊情況:異常情況(不合法不合理的輸入):

[畫圖]:

[一刷]:

[二刷]:

[三刷]:

[四刷]:

[五刷]:

  [五分鐘肉眼debug的結果]:

[總結]:

[複雜度]:Time complexity: O() Space complexity: O()

[演算法思想:遞迴/分治/貪心]:

[關鍵模板化代碼]:

[其他解法]:

[Follow Up]:

[LC給出的題目變變變]:

 [代碼風格] :

801. Minimum Swaps To Make Sequences Increasing 為使兩個數組嚴格遞增,所需要的最小交換次數

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