Add solution and test-cases for problem 1598

Author: 0xff-dev

leetcode/1501-1600/1598.Crawler-Log-Folder/README.md

@@ -1,28 +1,45 @@
 # [1598.Crawler Log Folder][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
+The Leetcode file system keeps a log each time some user performs a change folder operation.
+
+The operations are described below:
+
+- `"../"` : Move to the parent folder of the current folder. (If you are already in the main folder, **remain in the same folder**).
+- `"./"` : Remain in the same folder.
+- `"x/"` : Move to the child folder named x (This folder is **guaranteed to always exist**).
+
+You are given a list of strings `logs` where `logs[i]` is the operation performed by the user at the i<sup>th</sup> step.
+
+The file system starts in the main folder, then the operations in `logs` are performed.
+
+Return the minimum number of operations needed to go back to the main folder after the change folder operations.
 
-**Example 1:**
+**Example 1:**  
+
+![1](./sample_11_1957.png)
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
+Input: logs = ["d1/","d2/","../","d21/","./"]
+Output: 2
+Explanation: Use this change folder operation "../" 2 times and go back to the main folder.
 ```
 
-## 题意
-> ...
+**Example 2:**  
 
-## 题解
+![2](./sample_22_1957.png)
 
-### 思路1
-> ...
-Crawler Log Folder
-```go
 ```
+Input: logs = ["d1/","d2/","./","d3/","../","d31/"]
+Output: 3
+```
+
+**Example 3:**
 
+```
+Input: logs = ["d1/","../","../","../"]
+Output: 0
+```
 
 ## 结语
 

leetcode/1501-1600/1598.Crawler-Log-Folder/Solution.go

@@ -1,5 +1,16 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+func Solution(logs []string) int {
+	deep := 0
+	for _, op := range logs {
+		if op == "./" {
+			continue
+		}
+		if op == "../" {
+			deep = max(0, deep-1)
+			continue
+		}
+		deep++
+	}
+	return deep
 }

leetcode/1501-1600/1598.Crawler-Log-Folder/Solution_test.go

@@ -10,12 +10,12 @@ 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", []string{"d1/", "d2/", "../", "d21/", "./"}, 2},
+		{"TestCase2", []string{"d1/", "d2/", "./", "d3/", "../", "d31/"}, 3},
+		{"TestCase3", []string{"d1/", "../", "../", "../"}, 0},
 	}
 
 	//	开始测试
@@ -30,10 +30,10 @@ 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() {
 }