From 96e9fcb3adc8676fd6ea0671d0ddbb7d9291eaeb Mon Sep 17 00:00:00 2001
From: jiyongchao <jiyongchaowy@163.com>
Date: Sun, 31 Mar 2024 11:19:54 +0800
Subject: [PATCH] =?UTF-8?q?Update=200017.=E7=94=B5=E8=AF=9D=E5=8F=B7?=
 =?UTF-8?q?=E7=A0=81=E7=9A=84=E5=AD=97=E6=AF=8D=E7=BB=84=E5=90=88.md?=
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---
 problems/0017.电话号码的字母组合.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

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 cbd99f8d..0ad26bfd 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
@@ -260,7 +260,7 @@ class Solution {
 
     }
 
-    //每次迭代获取一个字符串，所以会设计大量的字符串拼接，所以这里选择更为高效的 StringBuilder
+    //每次迭代获取一个字符串，所以会涉及大量的字符串拼接，所以这里选择更为高效的 StringBuilder
     StringBuilder temp = new StringBuilder();
 
     //比如digits如果为"23",num 为0，则str表示2对应的 abc
@@ -274,7 +274,7 @@ class Solution {
         String str = numString[digits.charAt(num) - '0'];
         for (int i = 0; i < str.length(); i++) {
             temp.append(str.charAt(i));
-            //c
+            //递归，处理下一层
             backTracking(digits, numString, num + 1);
             //剔除末尾的继续尝试
             temp.deleteCharAt(temp.length() - 1);