diff --git a/sort/insertion-sort.mjs b/sort/insertion-sort.mjs
index ab9f233..1885a02 100644
--- a/sort/insertion-sort.mjs
+++ b/sort/insertion-sort.mjs
@@ -1,5 +1,9 @@
 import { generateRandomArray, isSort } from "../util/index.mjs";
 
+/**
+ * 插入排序
+ * @param {number[]} arr 
+ */
 export function insertionSort(arr){
     let n = arr.length;
     for (let i = 1; i<n; i++) {
@@ -12,8 +16,3 @@ export function insertionSort(arr){
         arr[j+1] = currentElement
     }
 }
-
-let arr = generateRandomArray(1000)
-
-insertionSort(arr)
-console.log(isSort(arr));
\ No newline at end of file