diff --git "a/problems/0001.\344\270\244\346\225\260\344\271\213\345\222\214.md" "b/problems/0001.\344\270\244\346\225\260\344\271\213\345\222\214.md"
index e982ae129b..3c92e4dfeb 100644
--- "a/problems/0001.\344\270\244\346\225\260\344\271\213\345\222\214.md"
+++ "b/problems/0001.\344\270\244\346\225\260\344\271\213\345\222\214.md"
@@ -287,17 +287,16 @@ func twoSum(nums []int, target int) []int {
 ```
 
 ```go
-// 使用map方式解题，降低时间复杂度
 func twoSum(nums []int, target int) []int {
     m := make(map[int]int)
-    for index, val := range nums {
-        if preIndex, ok := m[target-val]; ok {
-            return []int{preIndex, index}
-        } else {
-            m[val] = index
+    for i, num := range nums {
+        complement := target - num
+        if index, found := m[complement]; found {
+            return []int{index, i}
         }
+        m[num] = i
     }
-    return []int{}
+    return nil  // 返回空数组 nil 代替空切片
 }
 ```