diff --git a/codes/javascript/chapter_sorting/counting_sort.js b/codes/javascript/chapter_sorting/counting_sort.js
index dee3c1603..96fbcefc2 100644
--- a/codes/javascript/chapter_sorting/counting_sort.js
+++ b/codes/javascript/chapter_sorting/counting_sort.js
@@ -8,10 +8,7 @@
 // 简单实现，无法用于排序对象
 function countingSortNaive(nums) {
     // 1. 统计数组最大元素 m
-    let m = 0;
-    for (const num of nums) {
-        m = Math.max(m, num);
-    }
+    let m = Math.max(...nums);
     // 2. 统计各数字的出现次数
     // counter[num] 代表 num 的出现次数
     const counter = new Array(m + 1).fill(0);
@@ -31,10 +28,7 @@ function countingSortNaive(nums) {
 // 完整实现，可排序对象，并且是稳定排序
 function countingSort(nums) {
     // 1. 统计数组最大元素 m
-    let m = 0;
-    for (const num of nums) {
-        m = Math.max(m, num);
-    }
+    let m = Math.max(...nums);
     // 2. 统计各数字的出现次数
     // counter[num] 代表 num 的出现次数
     const counter = new Array(m + 1).fill(0);
diff --git a/codes/javascript/chapter_sorting/radix_sort.js b/codes/javascript/chapter_sorting/radix_sort.js
index 7d9627db9..11f882ee8 100644
--- a/codes/javascript/chapter_sorting/radix_sort.js
+++ b/codes/javascript/chapter_sorting/radix_sort.js
@@ -41,12 +41,7 @@ function countingSortDigit(nums, exp) {
 /* 基数排序 */
 function radixSort(nums) {
     // 获取数组的最大元素，用于判断最大位数
-    let m = Number.MIN_VALUE;
-    for (const num of nums) {
-        if (num > m) {
-            m = num;
-        }
-    }
+    let m = Math.max(... nums);
     // 按照从低位到高位的顺序遍历
     for (let exp = 1; exp <= m; exp *= 10) {
         // 对数组元素的第 k 位执行计数排序
diff --git a/codes/typescript/chapter_sorting/counting_sort.ts b/codes/typescript/chapter_sorting/counting_sort.ts
index cdf60c0a4..2422c75de 100644
--- a/codes/typescript/chapter_sorting/counting_sort.ts
+++ b/codes/typescript/chapter_sorting/counting_sort.ts
@@ -8,10 +8,7 @@
 // 简单实现，无法用于排序对象
 function countingSortNaive(nums: number[]): void {
     // 1. 统计数组最大元素 m
-    let m = 0;
-    for (const num of nums) {
-        m = Math.max(m, num);
-    }
+    let m: number = Math.max(...nums);
     // 2. 统计各数字的出现次数
     // counter[num] 代表 num 的出现次数
     const counter: number[] = new Array<number>(m + 1).fill(0);
@@ -31,10 +28,7 @@ function countingSortNaive(nums: number[]): void {
 // 完整实现，可排序对象，并且是稳定排序
 function countingSort(nums: number[]): void {
     // 1. 统计数组最大元素 m
-    let m = 0;
-    for (const num of nums) {
-        m = Math.max(m, num);
-    }
+    let m: number = Math.max(...nums);
     // 2. 统计各数字的出现次数
     // counter[num] 代表 num 的出现次数
     const counter: number[] = new Array<number>(m + 1).fill(0);
diff --git a/codes/typescript/chapter_sorting/radix_sort.ts b/codes/typescript/chapter_sorting/radix_sort.ts
index 109a1e59f..40be727f3 100644
--- a/codes/typescript/chapter_sorting/radix_sort.ts
+++ b/codes/typescript/chapter_sorting/radix_sort.ts
@@ -41,12 +41,7 @@ function countingSortDigit(nums: number[], exp: number): void {
 /* 基数排序 */
 function radixSort(nums: number[]): void {
     // 获取数组的最大元素，用于判断最大位数
-    let m = Number.MIN_VALUE;
-    for (const num of nums) {
-        if (num > m) {
-            m = num;
-        }
-    }
+    let m: number = Math.max(... nums);
     // 按照从低位到高位的顺序遍历
     for (let exp = 1; exp <= m; exp *= 10) {
         // 对数组元素的第 k 位执行计数排序