diff --git a/CodingInterview.md b/CodingInterview.md
index b12236b..a7eb848 100644
--- a/CodingInterview.md
+++ b/CodingInterview.md
@@ -17,8 +17,8 @@
 | 12 | [矩阵中的路径](https://www.nowcoder.com/practice/c61c6999eecb4b8f88a98f66b273a3cc?tpId=13&tqId=11218&tPage=4&rp=4&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [79. Word Search](solutions/79.%20Word%20Search.md)|
 | 15 | [二进制中1的个数](https://www.nowcoder.com/practice/8ee967e43c2c4ec193b040ea7fbb10b8?tpId=13&tqId=11164&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [191. Number of 1 Bits](solutions/191.%20Number%20of%201%20Bits.md)|
 | 16 | [数值的整数次方](https://www.nowcoder.com/practice/1a834e5e3e1a4b7ba251417554e07c00?tpId=13&tqId=11165&tPage=1&rp=1&ru=%2Fta%2Fcoding-interviews&qru=%2Fta%2Fcoding-interviews%2Fquestion-ranking) | [50. Pow(x, n)](solutions/50.%20Pow(x%2C%20n).md)|
-| 18 | 删除链表中的节点 一 | [237. Delete Node in a Linked List](solutions/237.%20Delete%20Node%20in%20a%20Linked%20List.md)| 略有不同 |
-| 18 | [删除链表中的节点 二](https://www.nowcoder.com/practice/fc533c45b73a41b0b44ccba763f866ef?tpId=13&tqId=11209&tPage=3&rp=3&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [82. Remove Duplicates from Sorted List II](solutions/82.%20Remove%20Duplicates%20from%20Sorted%20List%20II.md)|
+| 18 | 一、在O(1)时间内删除链表节点 | [237. Delete Node in a Linked List](solutions/237.%20Delete%20Node%20in%20a%20Linked%20List.md)| 略有不同 |
+| 18 | [二、删除链表中重复的节点](https://www.nowcoder.com/practice/fc533c45b73a41b0b44ccba763f866ef?tpId=13&tqId=11209&tPage=3&rp=3&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [82. Remove Duplicates from Sorted List II](solutions/82.%20Remove%20Duplicates%20from%20Sorted%20List%20II.md)|
 | 19 | [正则表达式匹配](https://www.nowcoder.com/practice/45327ae22b7b413ea21df13ee7d6429c?tpId=13&tqId=11205&tPage=3&rp=3&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [10. Regular Expression Matching](solutions/10.%20Regular%20Expression%20Matching.md)|
 | 20 | [表示数值的字符串](https://www.nowcoder.com/practice/6f8c901d091949a5837e24bb82a731f2?tpId=13&tqId=11206&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [65. Valid Number](solutions/65.%20Valid%20Number.md)|
 | 21 | [调整数组顺序使奇数位于偶数之前](https://www.nowcoder.com/practice/6f8c901d091949a5837e24bb82a731f2?tpId=13&tqId=11206&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking) | [905. Sort Array By Parity](solutions/905.%20Sort%20Array%20By%20Parity.md)| 要求刚好相反 |