leetcode

1 Random Problem

2 files changed, 24 insertions(+), 0 deletions(-)

diff --git a/ Problems/0939.cpp b/ Problems/0939.cpp

@@ -0,0 +1,23 @@

class Solution {

static int hash(int x, int y) { return 40000 * x + y; }

public:

int minAreaRect(const vector<vector<int>> &points) const {

const int n = size(points);

unordered_set<int> us;

int res = INT_MAX;

for (int i = 0; i < n; i++) {

for (int j = 0; j < i; j++) {

const int x1 = points[i][0], y1 = points[i][1];

const int x2 = points[j][0], y2 = points[j][1];

if (us.count(hash(x1, y2)) && us.count(hash(x2, y1))) {

res = min(res, abs(x1 - x2) * abs(y2 - y1));

}

}

us.insert(hash(points[i][0], points[i][1]));

}

return res != INT_MAX ? res : 0;

}

};

diff --git a/ README.md b/ README.md

@@ -552,6 +552,7 @@ for solving problems. | 0935 | Medium | [Knight Dialer](Problems/0935.cpp) | | 0937 | Medium | [Reorder Data in Log Files](Problems/0937.cpp) | | 0938 | Easy | [Range Sum of BST](Problems/0938.cpp) |

| 0939 | Medium | [Minimum Area Rectangle](Problems/0939.cpp) |

| 0941 | Easy | [Valid Mountain Array](Problems/0941.cpp) | | 0944 | Easy | [Delete Columns to Make Sorted](Problems/0944.cpp) | | 0946 | Medium | [Validate Stack Sequences](Problems/0946.cpp) |