Add solution and test-cases for problem 2108

Author: 0xff-dev

leetcode/2101-2200/2108.Find-First-Palindromic-String-in-the-Array/README.md

@@ -1,28 +1,34 @@
 # [2108.Find First Palindromic String in the Array][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 an array of strings `words`, return the first **palindromic** string in the array. If there is no such string, return an **empty string** `""`.
+
+A string is **palindromic** if it reads the same forward and backward.
 
 **Example 1:**
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
+Input: words = ["abc","car","ada","racecar","cool"]
+Output: "ada"
+Explanation: The first string that is palindromic is "ada".
+Note that "racecar" is also palindromic, but it is not the first.
 ```
 
-## 题意
-> ...
+**Example 2:**
 
-## 题解
-
-### 思路1
-> ...
-Find First Palindromic String in the Array
-```go
+```
+Input: words = ["notapalindrome","racecar"]
+Output: "racecar"
+Explanation: The first and only string that is palindromic is "racecar".
 ```
 
+**Example 3:**
+
+```
+Input: words = ["def","ghi"]
+Output: ""
+Explanation: There are no palindromic strings, so the empty string is returned.
+```
 
 ## 结语
 

leetcode/2101-2200/2108.Find-First-Palindromic-String-in-the-Array/Solution.go

@@ -1,5 +1,13 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+func Solution(words []string) string {
+	for _, str := range words {
+		s, e := 0, len(str)-1
+		for ; s < e && str[s] == str[e]; s, e = s+1, e-1 {
+		}
+		if s >= e {
+			return str
+		}
+	}
+	return ""
 }

leetcode/2101-2200/2108.Find-First-Palindromic-String-in-the-Array/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 string
 	}{
-		{"TestCase", true, true},
-		{"TestCase", true, true},
-		{"TestCase", false, false},
+		{"TestCase1", []string{"abc", "car", "ada", "racecar", "cool"}, "ada"},
+		{"TestCase2", []string{"notapalindrome", "racecar"}, "racecar"},
+		{"TestCase3", []string{"def", "ghi"}, ""},
 	}
 
 	//	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() {
 }