让我们看下面的实现以更好地理解-
#include <bits/stdc++.h> using namespace std; class Solution { public: int minSwap(vector<int>& A, vector<int>& B) { int n = A.size(); vector <int> swapCnt(n), noSwapCnt(n); swapCnt[0] = 1; noSwapCnt[0] = 0; for(int i = 1; i < n; i++){ swapCnt[i] = n; noSwapCnt[i] = n; if(A[i] > A[i - 1] && B[i] > B[i - 1]){ noSwapCnt[i] = noSwapCnt[i - 1]; swapCnt[i] = swapCnt[i - 1] + 1; } if(A[i] > B[i - 1] && B[i] > A[i - 1]){ swapCnt[i] = min(swapCnt[i], 1 + noSwapCnt[i - 1]); noSwapCnt[i] = min(swapCnt[i - 1], noSwapCnt[i]); } } return min(swapCnt[n - 1], noSwapCnt[n - 1]); } }; main(){ vector<int> v1 = {1,3,5,4}; vector<int> v2 = {1,2,3,7}; Solution ob; cout << (ob.minSwap(v1, v2)); }
[1,3,5,4] [1,2,3,7]
输出结果
1