Day6. Namespace style

557. Reverse Words in a String III/557. Reverse Words in a String III.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <RootNamespace>_557._Reverse_Words_in_a_String_III</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

557. Reverse Words in a String III/Program.cs

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+namespace _557._Reverse_Words_in_a_String_III;
+
+internal class Program
+{
+    static void Main(string[] args)
+    {
+        Console.WriteLine(new Solution().ReverseWords("God Ding"));
+    }
+}

557. Reverse Words in a String III/Solution.cs

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+using System.Text;
+
+namespace _557._Reverse_Words_in_a_String_III;
+
+public class Solution
+{
+    public string ReverseWords(string s)
+    {
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < s.Length; i++)
+        {
+            if (s[i] == ' ')
+                sb.Append(' ');
+            else
+            {
+                int startIndex = i;
+                while (i < s.Length - 1 && s[i + 1] != ' ')
+                    i++;
+                for (int r = i; r >= startIndex; r--)
+                    sb.Append(s[r]);
+            }
+        }
+        return sb.ToString();
+    }
+}