Add solution and test-cases for problem 434

Author: 0xff-dev

leetcode/401-500/0434.Number-of-Segments-in-a-String/README.md

@@ -1,28 +1,24 @@
 # [434.Number of Segments in a String][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 string `s`, return the number of segments in the string.
+
+A **segment** is defined to be a contiguous sequence of **non-space characters**.
 
 **Example 1:**
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
+Input: s = "Hello, my name is John"
+Output: 5
+Explanation: The five segments are ["Hello,", "my", "name", "is", "John"]
 ```
 
-## 题意
-> ...
-
-## 题解
+**Example 2:**
 
-### 思路1
-> ...
-Number of Segments in a String
-```go
 ```
-
+Input: s = "Hello"
+Output: 1
+```
 
 ## 结语
 

leetcode/401-500/0434.Number-of-Segments-in-a-String/Solution.go

@@ -1,5 +1,24 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+func Solution(s string) int {
+	cnt := 0
+	start := -1
+	end := 0
+	for ; end < len(s); end++ {
+		if s[end] == ' ' {
+			if start == -1 {
+				continue
+			}
+			cnt++
+			start = -1
+			continue
+		}
+		if start == -1 {
+			start = end
+		}
+	}
+	if start != -1 {
+		cnt++
+	}
+	return cnt
 }

leetcode/401-500/0434.Number-of-Segments-in-a-String/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 string
+		expect int
 	}{
-		{"TestCase", true, true},
-		{"TestCase", true, true},
-		{"TestCase", false, false},
+		{"TestCase1", "Hello, my name is John", 5},
+		{"TestCase2", "Hello", 1},
 	}
 
 	//	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() {
 }