Merge pull request #1274 from 0xff-dev/367

Add solution and test-cases for problem 367

Author: 6boris

leetcode/301-400/0367.Valid-Perfect-Square/README.md

@@ -1,28 +1,28 @@
 # [367.Valid Perfect Square][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
 
+Given a positive integer num, return true if `num` is a perfect square or `false` otherwise.
+
+A **perfect square** is an integer that is the square of an integer. In other words, it is the product of some integer with itself.
+
+You must not use any built-in library function, such as `sqrt`.
+
 **Example 1:**
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
+Input: num = 16
+Output: true
+Explanation: We return true because 4 * 4 = 16 and 4 is an integer.
 ```
 
-## 题意
-> ...
+**Example 2:**
 
-## 题解
-
-### 思路1
-> ...
-Valid Perfect Square
-```go
 ```
-
+Input: num = 14
+Output: false
+Explanation: We return false because 3.742 * 3.742 = 14 and 3.742 is not an integer.
+```
 
 ## 结语
 

leetcode/301-400/0367.Valid-Perfect-Square/Solution.go

@@ -1,5 +1,11 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+import "sort"
+
+func Solution(num int) bool {
+	l := (1 << 31) - 1
+	index := sort.Search(l, func(i int) bool {
+		return i*i >= num
+	})
+	return index*index == num
 }

leetcode/301-400/0367.Valid-Perfect-Square/Solution_test.go

@@ -10,12 +10,11 @@ func TestSolution(t *testing.T) {
 	//	测试用例
 	cases := []struct {
 		name   string
-		inputs bool
+		inputs int
 		expect bool
 	}{
-		{"TestCase", true, true},
-		{"TestCase", true, true},
-		{"TestCase", false, false},
+		{"TestCase1", 16, true},
+		{"TestCase2", 14, false},
 	}
 
 	//	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() {
 }