Add solution and test-cases for problem 3228

Author: 0xff-dev

leetcode/3201-3300/3228.Maximum-Number-of-Operations-to-Move-Ones-to-the-End/README.md

@@ -1,28 +1,39 @@
 # [3228.Maximum Number of Operations to Move Ones to the End][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 a binary string `s`.
+
+You can perform the following operation on the string **any** number of times:
+
+- Choose **any** index `i` from the string where `i + 1 < s.length` such that `s[i] == '1'` and `s[i + 1] == '0'`.
+- Move the character `s[i]` to the **right** until it reaches the end of the string or another `'1'`. For example, for `s = "010010"`, if we choose `i = 1`, the resulting string will be `s = "000110"`.
+
+Return the **maximum** number of operations that you can perform.
 
 **Example 1:**
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
-```
+Input: s = "1001101"
 
-## 题意
-> ...
+Output: 4
 
-## 题解
+Explanation:
 
-### 思路1
-> ...
-Maximum Number of Operations to Move Ones to the End
-```go
+We can perform the following operations:
+
+Choose index i = 0. The resulting string is s = "0011101".
+Choose index i = 4. The resulting string is s = "0011011".
+Choose index i = 3. The resulting string is s = "0010111".
+Choose index i = 2. The resulting string is s = "0001111".
 ```
 
+**Example 2:**
+
+```
+Input: s = "00111"
+
+Output: 0
+```
 
 ## 结语
 

leetcode/3201-3300/3228.Maximum-Number-of-Operations-to-Move-Ones-to-the-End/Solution.go

@@ -1,5 +1,19 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+func Solution(s string) int {
+	countOne := 0
+	ans := 0
+	i := 0
+	for i < len(s) {
+		if s[i] == '0' {
+			for i+1 < len(s) && s[i+1] == '0' {
+				i++
+			}
+			ans += countOne
+		} else {
+			countOne++
+		}
+		i++
+	}
+	return ans
 }

leetcode/3201-3300/3228.Maximum-Number-of-Operations-to-Move-Ones-to-the-End/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", "1001101", 4},
+		{"TestCase2", "00111", 0},
 	}
 
 	//	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() {
 }