diff --git a/codes/javascript/chapter_backtracking/subset_sum_i.js b/codes/javascript/chapter_backtracking/subset_sum_i.js
index d07c85a2c..add812184 100644
--- a/codes/javascript/chapter_backtracking/subset_sum_i.js
+++ b/codes/javascript/chapter_backtracking/subset_sum_i.js
@@ -31,7 +31,7 @@ function backtrack(state, target, choices, start, res) {
 /* 求解子集和 I */
 function subsetSumI(nums, target) {
     const state = []; // 状态（子集）
-    nums.sort(); // 对 nums 进行排序
+    nums.sort((a, b) => a - b); // 对 nums 进行排序
     const start = 0; // 遍历起始点
     const res = []; // 结果列表（子集列表）
     backtrack(state, target, nums, start, res);
diff --git a/codes/javascript/chapter_backtracking/subset_sum_ii.js b/codes/javascript/chapter_backtracking/subset_sum_ii.js
index 293b468e6..78fcce604 100644
--- a/codes/javascript/chapter_backtracking/subset_sum_ii.js
+++ b/codes/javascript/chapter_backtracking/subset_sum_ii.js
@@ -36,7 +36,7 @@ function backtrack(state, target, choices, start, res) {
 /* 求解子集和 II */
 function subsetSumII(nums, target) {
     const state = []; // 状态（子集）
-    nums.sort(); // 对 nums 进行排序
+    nums.sort((a, b) => a - b); // 对 nums 进行排序
     const start = 0; // 遍历起始点
     const res = []; // 结果列表（子集列表）
     backtrack(state, target, nums, start, res);
diff --git a/codes/typescript/chapter_backtracking/subset_sum_i.ts b/codes/typescript/chapter_backtracking/subset_sum_i.ts
index b9e2497dd..eafd0150b 100644
--- a/codes/typescript/chapter_backtracking/subset_sum_i.ts
+++ b/codes/typescript/chapter_backtracking/subset_sum_i.ts
@@ -37,7 +37,7 @@ function backtrack(
 /* 求解子集和 I */
 function subsetSumI(nums: number[], target: number): number[][] {
     const state = []; // 状态（子集）
-    nums.sort(); // 对 nums 进行排序
+    nums.sort((a, b) => a - b); // 对 nums 进行排序
     const start = 0; // 遍历起始点
     const res = []; // 结果列表（子集列表）
     backtrack(state, target, nums, start, res);
@@ -51,4 +51,4 @@ const res = subsetSumI(nums, target);
 console.log(`输入数组 nums = ${JSON.stringify(nums)}, target = ${target}`);
 console.log(`所有和等于 ${target} 的子集 res = ${JSON.stringify(res)}`);
 
-export {};
+export { };
diff --git a/codes/typescript/chapter_backtracking/subset_sum_ii.ts b/codes/typescript/chapter_backtracking/subset_sum_ii.ts
index ae010e65c..0d3175fcf 100644
--- a/codes/typescript/chapter_backtracking/subset_sum_ii.ts
+++ b/codes/typescript/chapter_backtracking/subset_sum_ii.ts
@@ -42,7 +42,7 @@ function backtrack(
 /* 求解子集和 II */
 function subsetSumII(nums: number[], target: number): number[][] {
     const state = []; // 状态（子集）
-    nums.sort(); // 对 nums 进行排序
+    nums.sort((a, b) => a - b); // 对 nums 进行排序
     const start = 0; // 遍历起始点
     const res = []; // 结果列表（子集列表）
     backtrack(state, target, nums, start, res);
@@ -56,4 +56,4 @@ const res = subsetSumII(nums, target);
 console.log(`输入数组 nums = ${JSON.stringify(nums)}, target = ${target}`);
 console.log(`所有和等于 ${target} 的子集 res = ${JSON.stringify(res)}`);
 
-export {};
+export { };