Add solution and test-cases for problem 939

leetcode/901-1000/0939.Minimum-Area-Rectangle/README.md

@@ -1,28 +1,27 @@
 # [939.Minimum Area Rectangle][title]
 
-> [!WARNING|style:flat]
-> This question is temporarily unanswered if you have good ideas. Welcome to [Create Pull Request PR](https://github.com/kylesliu/awesome-golang-algorithm)
-
 ## Description
+You are given an array of points in the **X-Y** plane `points` where `points[i] = [xi, yi]`.
+
+Return the minimum area of a rectangle formed from these points, with sides parallel to the X and Y axes. If there is not any such rectangle, return `0`.
+
+**Example 1:**  
 
-**Example 1:**
+![1](./1.jpeg)
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
+Input: points = [[1,1],[1,3],[3,1],[3,3],[2,2]]
+Output: 4
 ```
 
-## 题意
-> ...
+**Example 2:**  
 
-## 题解
+![2](./2.jpeg)
 
-### 思路1
-> ...
-Minimum Area Rectangle
-```go
 ```
-
+Input: points = [[1,1],[1,3],[3,1],[3,3],[4,1],[4,3]]
+Output: 2
+```
 
 ## 结语
 

leetcode/901-1000/0939.Minimum-Area-Rectangle/Solution.go

@@ -1,5 +1,39 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+func Solution(points [][]int) int {
+	keys := make(map[[2]int]struct{})
+	for _, xy := range points {
+		keys[[2]int{xy[0], xy[1]}] = struct{}{}
+	}
+
+	ans := 0
+	for i, xy := range points {
+		for j, other := range points {
+			if i == j {
+				continue
+			}
+			if xy[0] == other[0] || xy[1] == other[1] {
+				continue
+			}
+			x1, y1, x2, y2 := xy[0], other[1], other[0], xy[1]
+			_, ok1 := keys[[2]int{x1, y1}]
+			if ok1 {
+				if _, ok2 := keys[[2]int{x2, y2}]; ok2 {
+					width := x1 - x2
+					if width < 0 {
+						width = -width
+					}
+					height := y1 - y2
+					if height < 0 {
+						height = -height
+					}
+					area := width * height
+					if ans == 0 || ans > area {
+						ans = area
+					}
+				}
+			}
+		}
+	}
+	return ans
 }

leetcode/901-1000/0939.Minimum-Area-Rectangle/Solution_test.go

@@ -10,12 +10,11 @@ func TestSolution(t *testing.T) {
 	//	测试用例
 	cases := []struct {
 		name   string
-		inputs bool
-		expect bool
+		inputs [][]int
+		expect int
 	}{
-		{"TestCase", true, true},
-		{"TestCase", true, true},
-		{"TestCase", false, false},
+		{"TestCase1", [][]int{{1, 1}, {1, 3}, {3, 1}, {3, 3}, {2, 2}}, 4},
+		{"TestCase2", [][]int{{1, 1}, {1, 3}, {3, 1}, {3, 3}, {4, 1}, {4, 3}}, 2},
 	}
 
 	//	开始测试
@@ -30,10 +29,10 @@ func TestSolution(t *testing.T) {
 	}
 }
 
-//	压力测试
+// 压力测试
 func BenchmarkSolution(b *testing.B) {
 }
 
-//	使用案列
+// 使用案列
 func ExampleSolution() {
 }