From 51a6f374a7e6cf4cbf290ab5bf0740ba7f9aa0e7 Mon Sep 17 00:00:00 2001
From: machangxin <machangxinq@gmail.com>
Date: Mon, 12 Dec 2022 18:32:58 +0800
Subject: [PATCH] Insertion sort using go

---
 .../insertion_sort/insertion_sort.go          | 20 +++++++++++++++++++
 .../insertion_sort/insertion_sort_test.go     | 17 ++++++++++++++++
 docs/chapter_sorting/insertion_sort.md        | 14 +++++++++++++
 3 files changed, 51 insertions(+)
 create mode 100644 codes/go/chapter_sorting/insertion_sort/insertion_sort.go
 create mode 100644 codes/go/chapter_sorting/insertion_sort/insertion_sort_test.go

diff --git a/codes/go/chapter_sorting/insertion_sort/insertion_sort.go b/codes/go/chapter_sorting/insertion_sort/insertion_sort.go
new file mode 100644
index 000000000..47effeb75
--- /dev/null
+++ b/codes/go/chapter_sorting/insertion_sort/insertion_sort.go
@@ -0,0 +1,20 @@
+/*
+	File: insertion_sort.go
+	Created Time: 2022-12-12
+	Author: msk397 (machangxinq@gmail.com)
+*/
+package insertion_sort
+
+func insertionSort(nums []int) {
+	// 外循环：待排序元素数量为 n-1, n-2, ..., 1
+	for i := 1; i < len(nums); i++ {
+		base := nums[i]
+		j := i - 1
+		// 内循环：将 base 插入到左边的正确位置
+		for j >= 0 && nums[j] > base {
+			nums[j+1] = nums[j] // 1. 将 nums[j] 向右移动一位
+			j--
+		}
+		nums[j+1] = base // 2. 将 base 赋值到正确位置
+	}
+}
diff --git a/codes/go/chapter_sorting/insertion_sort/insertion_sort_test.go b/codes/go/chapter_sorting/insertion_sort/insertion_sort_test.go
new file mode 100644
index 000000000..1b37d6862
--- /dev/null
+++ b/codes/go/chapter_sorting/insertion_sort/insertion_sort_test.go
@@ -0,0 +1,17 @@
+/*
+	File: insertion_sort_test.go
+	Created Time: 2022-12-12
+	Author: msk397 (machangxinq@gmail.com)
+*/
+package insertion_sort
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestInsertionSort(t *testing.T) {
+	nums := []int{4, 1, 3, 1, 5, 2}
+	insertionSort(nums)
+	fmt.Println("插入排序完成后 nums = ", nums)
+}
diff --git a/docs/chapter_sorting/insertion_sort.md b/docs/chapter_sorting/insertion_sort.md
index 86debc625..6edf060f5 100644
--- a/docs/chapter_sorting/insertion_sort.md
+++ b/docs/chapter_sorting/insertion_sort.md
@@ -79,6 +79,20 @@ comments: true
 === "Go"
 
     ```go title="insertion_sort.go"
+    /* 插入排序 */
+    func insertionSort(nums []int) {
+        // 外循环：待排序元素数量为 n-1, n-2, ..., 1
+        for i := 1; i < len(nums); i++ {
+            base := nums[i]
+            j := i - 1
+            // 内循环：将 base 插入到左边的正确位置
+            for j >= 0 && nums[j] > base {
+                nums[j+1] = nums[j] // 1. 将 nums[j] 向右移动一位
+                j--
+            }
+            nums[j+1] = base // 2. 将 base 赋值到正确位置
+        }
+}
 
     ```