From 361cdc26b2ca8f9b50febcf6661dc22bc676f859 Mon Sep 17 00:00:00 2001
From: PeixiZ <peixi.zheng@raykite.com>
Date: Wed, 26 Jan 2022 16:57:27 +0800
Subject: [PATCH 1/2] add c# select

---
 basic/sorting/SelectionSort/SelectionSort.cs | 36 ++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 basic/sorting/SelectionSort/SelectionSort.cs

diff --git a/basic/sorting/SelectionSort/SelectionSort.cs b/basic/sorting/SelectionSort/SelectionSort.cs
new file mode 100644
index 0000000000000..93a374da2c0b7
--- /dev/null
+++ b/basic/sorting/SelectionSort/SelectionSort.cs
@@ -0,0 +1,36 @@
+using static System.Console;
+namespace Pro;
+public class Program
+{
+    public static void Main()
+    {
+        int[] test = new int[] {90, 12, 77, 9, 0, 2, 23, 23, 3, 57, 80};
+        SelectionSortNums(test);
+        foreach (var item in test)
+        {
+            WriteLine(item);
+        }
+    }
+    public static void SelectionSortNums(int[] nums)
+    {        
+        for (int initial = 0; initial < nums.Length; initial++)
+        {
+            for (int second_sort = initial; second_sort < nums.Length; second_sort++)
+            {
+                if(nums[initial] > nums[second_sort])
+                {
+                    swap(ref nums[initial], ref nums[second_sort]);
+                }
+            }
+        }
+
+    }
+
+     private static void swap(ref int compare_left, ref int compare_right)
+    {
+        int temp = compare_left;
+        compare_left = compare_right;
+        compare_right = temp;
+    }
+
+}

From b61c13399456d0c8f0cc1c963fea07b59bbb5380 Mon Sep 17 00:00:00 2001
From: PeixiZ <peixi.zheng@raykite.com>
Date: Wed, 26 Jan 2022 17:01:57 +0800
Subject: [PATCH 2/2] fix readme

---
 basic/sorting/SelectionSort/README.md | 42 +++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/basic/sorting/SelectionSort/README.md b/basic/sorting/SelectionSort/README.md
index 800da7398e81c..cb8c16eb1a3e6 100644
--- a/basic/sorting/SelectionSort/README.md
+++ b/basic/sorting/SelectionSort/README.md
@@ -163,6 +163,48 @@ fn main() {
 }
 ```
 
+### **C#**
+
+```cs
+using static System.Console;
+namespace Pro;
+public class Program
+{
+    public static void Main()
+    {
+        int[] test = new int[] {90, 12, 77, 9, 0, 2, 23, 23, 3, 57, 80};
+        SelectionSortNums(test);
+        foreach (var item in test)
+        {
+            WriteLine(item);
+        }
+    }
+    public static void SelectionSortNums(int[] nums)
+    {        
+        for (int initial = 0; initial < nums.Length; initial++)
+        {
+            for (int second_sort = initial; second_sort < nums.Length; second_sort++)
+            {
+                if(nums[initial] > nums[second_sort])
+                {
+                    swap(ref nums[initial], ref nums[second_sort]);
+                }
+            }
+        }
+
+    }
+
+     private static void swap(ref int compare_left, ref int compare_right)
+    {
+        int temp = compare_left;
+        compare_left = compare_right;
+        compare_right = temp;
+    }
+
+}
+
+```
+
 <!-- tabs:end -->
 
 ## 算法分析