From b72d56464ed94586215acb7e7133d11ca39745e2 Mon Sep 17 00:00:00 2001
From: yigencong <yigencong@yahoo.com>
Date: Sat, 24 Feb 2024 13:42:56 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E6=B7=BB=E5=8A=A0shell=E6=8E=92?=
 =?UTF-8?q?=E5=BA=8F?=
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---
 sort/shell-sort.mjs | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 sort/shell-sort.mjs

diff --git a/sort/shell-sort.mjs b/sort/shell-sort.mjs
new file mode 100644
index 0000000..b50020e
--- /dev/null
+++ b/sort/shell-sort.mjs
@@ -0,0 +1,33 @@
+import { generateRandomArray, isSort } from "../util/index.mjs";
+
+/**
+ * 
+ * @param {number[]} arr 
+ */
+export function shellSort(arr){
+    const n = arr.length
+    // 创建希尔序列,以克努特序列为例
+    let gap = 1;
+    while (gap < n / 3) {
+        gap = gap*3 +1
+    }
+
+    while(gap>=1) {
+        // 正常插入排序
+        for (let i = 0;i<gap; i++){
+            for(let j = i+gap;j < n;j+=gap){
+                let temp = arr[j]
+                while(j>0 && arr[j-gap] > temp) {
+                    arr[j] = arr[j-gap]
+                    j-=gap
+                }
+                arr[j] = temp
+            }
+        }
+        // 正常插入排序
+
+        gap = Math.floor(gap/3)
+    }
+
+}
+