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October 10, 2017 17:12
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matrix-median
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| int findMedian(vector<vector<int> > &A) { | |
| int mn = A[0][0], mx = A[0][0], n = A.size(), m = A[0].size(); | |
| for (int i = 0; i < n; ++i) { | |
| if (A[i][0] < mn) mn = A[i][j]; | |
| if (A[i][m-1] > mx) mx = A[i][j]; | |
| } | |
| int desired = (n * m + 1) / 2; | |
| while (mn < mx) { | |
| int mid = mn + (mx - mn) / 2; | |
| int place = 0; | |
| for (int i = 0; i < n; ++i) | |
| place += upper_bound(A[i].begin(), A[i].end(), mid) - A[i].begin(); | |
| if (place < desired) | |
| mn = mid + 1; | |
| else | |
| mx = mid; | |
| } | |
| return mn; | |
| } |
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what is your j value??