diff --git a/problems/0017.电话号码的字母组合.md b/problems/0017.电话号码的字母组合.md index 58508e08..b3bbf122 100644 --- a/problems/0017.电话号码的字母组合.md +++ b/problems/0017.电话号码的字母组合.md @@ -503,7 +503,7 @@ func letterCombinations(_ digits: String) -> [String] { var result = [String]() var s = "" - func backtracking(digits: [Int], index: Int) { + func backtracking(index: Int) { // 结束条件:收集结果 if index == digits.count { result.append(s) @@ -514,11 +514,11 @@ func letterCombinations(_ digits: String) -> [String] { let letters = letterMap[digits[index]] for letter in letters { s.append(letter) // 处理 - backtracking(digits: digits, index: index + 1) // 递归,记得+1 + backtracking(index: index + 1) // 递归,记得+1 s.removeLast() // 回溯 } } - backtracking(digits: digits, index: 0) + backtracking(index: 0) return result } ```