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Update 0001.两数之和.md #2882

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Jun 15, 2025
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Update 0001.两数之和.md #2882

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13 changes: 6 additions & 7 deletions problems/0001.两数之和.md
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Original file line number Diff line number Diff line change
Expand Up @@ -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
}
```

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