1037 added.

1037-Valid-Boomerang/cpp-1037/CMakeLists.txt

@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 3.14)
+project(A)
+
+set(CMAKE_CXX_STANDARD 14)
+
+add_executable(A main2.cpp)

1037-Valid-Boomerang/cpp-1037/main.cpp

@@ -0,0 +1,47 @@
+/// Source : https://leetcode.com/problems/valid-boomerang/
+/// Author : liuyubobobo
+/// Time   : 2019-05-04
+
+#include <iostream>
+#include <vector>
+
+using namespace std;
+
+
+/// Calculate Slope
+/// Time Compelxity: O(1)
+/// Space Complexity: O(1)
+class Solution {
+public:
+    bool isBoomerang(vector<vector<int>>& points) {
+
+        if(points[0] == points[1] || points[1] == points[2])
+            return false;
+
+        int a = points[1][0] - points[0][0], c = points[2][0] - points[1][0],
+            b = points[1][1] - points[0][1], d = points[2][1] - points[1][1];
+        return a * d != b * c;
+    }
+};
+
+
+int main() {
+
+    vector<vector<int>> points1 = {{1, 1}, {2, 3}, {3, 2}};
+    cout << Solution().isBoomerang(points1) << endl;
+    // true
+
+    vector<vector<int>> points2 = {{1, 1}, {2, 2}, {3, 3}};
+    cout << Solution().isBoomerang(points2) << endl;
+    // false
+
+    vector<vector<int>> points3 = {{0, 0}, {1, 1}, {1, 1}};
+    cout << Solution().isBoomerang(points3) << endl;
+    // false
+
+    vector<vector<int>> points4 = {{80, 32}, {46, 32}, {59, 32}};
+    cout << Solution().isBoomerang(points3) << endl;
+    // false
+
+    return 0;
+}

1037-Valid-Boomerang/cpp-1037/main2.cpp

@@ -0,0 +1,43 @@
+/// Source : https://leetcode.com/problems/valid-boomerang/
+/// Author : liuyubobobo
+/// Time   : 2019-05-18
+
+#include <iostream>
+#include <vector>
+
+using namespace std;
+
+
+/// Calculate Cross Multiplication
+/// Time Compelxity: O(1)
+/// Space Complexity: O(1)
+class Solution {
+public:
+    bool isBoomerang(vector<vector<int>>& p) {
+        int a = p[1][0] - p[0][0], b = p[1][1] - p[0][1],
+            c = p[2][0] - p[1][0], d = p[2][1] - p[1][1];
+        return a * d - b * c != 0;
+    }
+};
+
+
+int main() {
+
+    vector<vector<int>> points1 = {{1, 1}, {2, 3}, {3, 2}};
+    cout << Solution().isBoomerang(points1) << endl;
+    // true
+
+    vector<vector<int>> points2 = {{1, 1}, {2, 2}, {3, 3}};
+    cout << Solution().isBoomerang(points2) << endl;
+    // false
+
+    vector<vector<int>> points3 = {{0, 0}, {1, 1}, {1, 1}};
+    cout << Solution().isBoomerang(points3) << endl;
+    // false
+
+    vector<vector<int>> points4 = {{80, 32}, {46, 32}, {59, 32}};
+    cout << Solution().isBoomerang(points3) << endl;
+    // false
+
+    return 0;
+}

readme.md

@@ -720,4 +720,5 @@ email: [[email protected]](mailto:[email protected])
 | 1034 | [Coloring A Border](https://leetcode.com/problems/coloring-a-border/) | [无] | [C++](1034-Coloring-A-Border/cpp-1034/) | | |
 | 1035 | [Uncrossed Lines](https://leetcode.com/problems/uncrossed-lines/) | [无] | [C++](1035-Uncrossed-Lines/cpp-1035/) | | |
 | 1036 | [Escape a Large Maze](https://leetcode.com/problems/escape-a-large-maze/) | [无] | [C++](1036-Escape-a-Large-Maze/cpp-1036/) | | |
+| 1037 | [Valid Boomerang](https://leetcode.com/problems/valid-boomerang/) | [无] | [C++](1037-Valid-Boomerang/cpp-1037/) | | |
 | | | | | | |