diff --git a/src/leetcode/0001.two-sum/index.md b/src/leetcode/0001.two-sum/index.md
index ae898805..e6796b23 100644
--- a/src/leetcode/0001.two-sum/index.md
+++ b/src/leetcode/0001.two-sum/index.md
@@ -1,6 +1,6 @@
 # 0001. 两数之和 Two Sum
 
-[问题描述](../problems/0001.two-sum/content.html)
+[问题描述](https://leetcode.com/problems/two-sum)
 
 ## 方法1, Brute Force
 
diff --git a/src/leetcode/0007.reverse-integer/index.md b/src/leetcode/0007.reverse-integer/index.md
index 69ee3c70..781e918e 100644
--- a/src/leetcode/0007.reverse-integer/index.md
+++ b/src/leetcode/0007.reverse-integer/index.md
@@ -1,6 +1,6 @@
 # 0007. 整数反转 Reverse Integer
 
-[问题描述](../problems/0007.reverse-integer/content.html)
+[问题描述](https://leetcode.com/problems/reverse-integer)
 
 这是一个数学问题. 它考察的知识有这几个方面:
 
diff --git a/src/leetcode/0011.container-with-most-water/index.md b/src/leetcode/0011.container-with-most-water/index.md
index 0b15f556..885dd075 100644
--- a/src/leetcode/0011.container-with-most-water/index.md
+++ b/src/leetcode/0011.container-with-most-water/index.md
@@ -1,6 +1,6 @@
 # 0011. 盛最多水的容器 Container With Most Water
 
-[问题描述](../problems/0011.container-with-most-water/content.html)
+[问题描述](https://leetcode.com/problems/container-with-most-water)
 
 这是一个典型的[靠拢型双指针问题](../../two-pointers/close-up.md).
 
diff --git a/src/leetcode/0012.integer-to-roman/index.md b/src/leetcode/0012.integer-to-roman/index.md
index f13446e4..2bad17ed 100644
--- a/src/leetcode/0012.integer-to-roman/index.md
+++ b/src/leetcode/0012.integer-to-roman/index.md
@@ -1,6 +1,6 @@
 # 0012. 整数转罗马数字 Integer to Roman
 
-[问题描述](../problems/0012.integer-to-roman/content.html)
+[问题描述](https://leetcode.com/problems/integer-to-roman)
 
 这也是字典映射问题, 目前实现了三种解法
 
diff --git a/src/leetcode/0013.roman-to-integer/index.md b/src/leetcode/0013.roman-to-integer/index.md
index a6452ee8..cbd54e9a 100644
--- a/src/leetcode/0013.roman-to-integer/index.md
+++ b/src/leetcode/0013.roman-to-integer/index.md
@@ -1,6 +1,6 @@
 # 0013. 罗马数字转整数 Roman to Integer
 
-[问题描述](../problems/0013.roman-to-integer/content.html)
+[问题描述](https://leetcode.com/problems/roman-to-integer)
 
 这是一个符号到整数的映射问题.
 
diff --git a/src/leetcode/0015.3sum/index.md b/src/leetcode/0015.3sum/index.md
index 1ced8753..cad36f81 100644
--- a/src/leetcode/0015.3sum/index.md
+++ b/src/leetcode/0015.3sum/index.md
@@ -1,6 +1,6 @@
 # 0015. 三数之和 3Sum
 
-[问题描述](../problems/0015.3sum/content.html)
+[问题描述](https://leetcode.com/problems/3sum)
 
 ## 暴力法
 
diff --git a/src/leetcode/0021.merge-two-sorted-lists/index.md b/src/leetcode/0021.merge-two-sorted-lists/index.md
index a7570f7d..65ee8d6d 100644
--- a/src/leetcode/0021.merge-two-sorted-lists/index.md
+++ b/src/leetcode/0021.merge-two-sorted-lists/index.md
@@ -1,3 +1,3 @@
 # 0021.合并两个有序链表 Merge Two Sorted Lists
 
-[问题描述](../problems/0021.merge-two-sorted-lists/content.html)
+[问题描述](https://leetcode.com/problems/merge-two-sorted-lists)
diff --git a/src/leetcode/0026.remove-duplicates-from-sorted-array/index.md b/src/leetcode/0026.remove-duplicates-from-sorted-array/index.md
index 83861116..6b949565 100644
--- a/src/leetcode/0026.remove-duplicates-from-sorted-array/index.md
+++ b/src/leetcode/0026.remove-duplicates-from-sorted-array/index.md
@@ -1,6 +1,6 @@
 # 0026. 删除有序数组中的重复项 Remove Duplicates from Sorted Array
 
-[问题描述](../problems/0026.remove-duplicates-from-sorted-array/content.html)
+[问题描述](https://leetcode.com/problems/remove-duplicates-from-sorted-array)
 
 要注意的一点是, 这个数组已经是有序的了.
 
diff --git a/src/leetcode/0031.next-permutation/index.md b/src/leetcode/0031.next-permutation/index.md
index 051c1dc1..7c22bd4a 100644
--- a/src/leetcode/0031.next-permutation/index.md
+++ b/src/leetcode/0031.next-permutation/index.md
@@ -1,4 +1,5 @@
 # 0031. 下一个排列 Next Permutation
 
-[问题描述](../problems/0031.next-permutation/content.html)
+[问题描述](https://leetcode.com/problems/next-permutation)
 
+TODO(Shaohua):
\ No newline at end of file
diff --git a/src/leetcode/0039.combination-sum/index.md b/src/leetcode/0039.combination-sum/index.md
index d31dfa61..11e3c632 100644
--- a/src/leetcode/0039.combination-sum/index.md
+++ b/src/leetcode/0039.combination-sum/index.md
@@ -1,3 +1,3 @@
 # 0039.组合总和 Combination Sum
 
-[问题描述](../problems/0039.combination-sum/content.html)
\ No newline at end of file
+[问题描述](https://leetcode.com/problems/combination-sum)
\ No newline at end of file
diff --git a/src/leetcode/0040.combination-sum-ii/index.md b/src/leetcode/0040.combination-sum-ii/index.md
index e69de29b..0a680907 100644
--- a/src/leetcode/0040.combination-sum-ii/index.md
+++ b/src/leetcode/0040.combination-sum-ii/index.md
@@ -0,0 +1,5 @@
+# 0040. 组合总和 II Combination Sum II
+
+[问题描述](https://leetcode.com/problems/combination-sum-ii)
+
+TODO(Shaohua):
\ No newline at end of file
diff --git a/src/leetcode/0046.permutations/index.md b/src/leetcode/0046.permutations/index.md
index bd35d13e..88c83491 100644
--- a/src/leetcode/0046.permutations/index.md
+++ b/src/leetcode/0046.permutations/index.md
@@ -1,3 +1,5 @@
 # 0046. 全排列 Permutations
 
-[问题描述](../problems/0046.permutations/content.html)
\ No newline at end of file
+[问题描述](https://leetcode.com/problems/permutations)
+
+TODO(Shaohua):
\ No newline at end of file
diff --git a/src/leetcode/0047.permutations-ii/index.md b/src/leetcode/0047.permutations-ii/index.md
index 5497aacf..8bc99a90 100644
--- a/src/leetcode/0047.permutations-ii/index.md
+++ b/src/leetcode/0047.permutations-ii/index.md
@@ -1 +1,3 @@
-# 0047. 全排列 II Permutations II
\ No newline at end of file
+# 0047. 全排列 II Permutations II
+
+[问题描述](https://leetcode.com/problems/permutations-ii)
\ No newline at end of file
diff --git a/src/leetcode/0067.add-binary/index.md b/src/leetcode/0067.add-binary/index.md
index f75d67f1..d6598d54 100644
--- a/src/leetcode/0067.add-binary/index.md
+++ b/src/leetcode/0067.add-binary/index.md
@@ -1,6 +1,6 @@
 # 0067. 二进制求和 Add Binary
 
-[问题描述](../problems/0067.add-binary/content.html)
+[问题描述](https://leetcode.com/problems/add-binary)
 
 这个问题考察两个方面的知识:
 
diff --git a/src/leetcode/0075.sort-colors/index.md b/src/leetcode/0075.sort-colors/index.md
index 69c2287b..7552bf4a 100644
--- a/src/leetcode/0075.sort-colors/index.md
+++ b/src/leetcode/0075.sort-colors/index.md
@@ -1,6 +1,6 @@
 # 0075. 颜色分类 Sort Colors
 
-[问题描述](../problems/0075.sort-colors/content.html)
+[问题描述](https://leetcode.com/problems/sort-colors)
 
 ## 靠拢型双指针
 
diff --git a/src/leetcode/0078.subsets/index.md b/src/leetcode/0078.subsets/index.md
index b8413cd3..a28b242c 100644
--- a/src/leetcode/0078.subsets/index.md
+++ b/src/leetcode/0078.subsets/index.md
@@ -1,3 +1,5 @@
 # 0078. 子集 Subsets
 
-[问题描述](../problems/0078.subsets/content.html)
\ No newline at end of file
+[问题描述](https://leetcode.com/problems/subsets)
+
+TODO(Shaohua):
\ No newline at end of file
diff --git a/src/leetcode/0080.remove-duplicates-from-sorted-array-ii/index.md b/src/leetcode/0080.remove-duplicates-from-sorted-array-ii/index.md
index 6d64631e..7267d714 100644
--- a/src/leetcode/0080.remove-duplicates-from-sorted-array-ii/index.md
+++ b/src/leetcode/0080.remove-duplicates-from-sorted-array-ii/index.md
@@ -1,6 +1,6 @@
 # 0080. 删除排序数组中的重复项 II Remove Duplicates from Sorted Array II
 
-[问题描述](../problems/0080.remove-duplicates-from-sorted-array-ii/content.html)
+[问题描述](https://leetcode.com/problems/remove-duplicates-from-sorted-array-ii)
 
 先分析这个题的条件:
 
diff --git a/src/leetcode/0082.remove-duplicates-from-sorted-list-ii/index.md b/src/leetcode/0082.remove-duplicates-from-sorted-list-ii/index.md
index 6ed3646d..25fb1f7d 100644
--- a/src/leetcode/0082.remove-duplicates-from-sorted-list-ii/index.md
+++ b/src/leetcode/0082.remove-duplicates-from-sorted-list-ii/index.md
@@ -1,3 +1,5 @@
 # 0082. 删除排序链表中的重复元素 II Remove Duplicates from Sorted List II
 
-[问题描述](../problems/0082.remove-duplicates-from-sorted-list-ii/content.html)
\ No newline at end of file
+[问题描述](https://leetcode.com/problems/remove-duplicates-from-sorted-list-ii)
+
+TODO(Shaohua):
\ No newline at end of file
diff --git a/src/leetcode/0083.remove-duplicates-from-sorted-list/index.md b/src/leetcode/0083.remove-duplicates-from-sorted-list/index.md
index edd99fe2..db002fb3 100644
--- a/src/leetcode/0083.remove-duplicates-from-sorted-list/index.md
+++ b/src/leetcode/0083.remove-duplicates-from-sorted-list/index.md
@@ -1,3 +1,5 @@
 # 0083. 删除排序链表中的重复元素 Remove Duplicates from Sorted List
 
-[问题描述](../problems/0083.remove-duplicates-from-sorted-list/content.html)
\ No newline at end of file
+[问题描述](https://leetcode.com/problems/remove-duplicates-from-sorted-list)
+
+TODO(Shaohua):
\ No newline at end of file
diff --git a/src/leetcode/0088.merge-sorted-array/index.md b/src/leetcode/0088.merge-sorted-array/index.md
index e69de29b..c4f71382 100644
--- a/src/leetcode/0088.merge-sorted-array/index.md
+++ b/src/leetcode/0088.merge-sorted-array/index.md
@@ -0,0 +1,5 @@
+# 0088. 合并两个有序数组 Merge Sorted Array
+
+[问题描述](https://leetcode.com/problems/merge-sorted-array)
+
+TODO(Shaohua):
\ No newline at end of file
diff --git a/src/leetcode/0090.subsets-ii/index.md b/src/leetcode/0090.subsets-ii/index.md
index f110cdbe..f171b7ff 100644
--- a/src/leetcode/0090.subsets-ii/index.md
+++ b/src/leetcode/0090.subsets-ii/index.md
@@ -1,3 +1,5 @@
 # 0090. 子集 II Subsets II
 
-[问题描述](../problems/0090.subsets-ii/content.html)
\ No newline at end of file
+[问题描述](https://leetcode.com/problems/subsets-ii/)
+
+TODO(Shaohua):
\ No newline at end of file
diff --git a/src/leetcode/0125.valid-palindrome/index.md b/src/leetcode/0125.valid-palindrome/index.md
index eeceeae9..acf6f0cf 100644
--- a/src/leetcode/0125.valid-palindrome/index.md
+++ b/src/leetcode/0125.valid-palindrome/index.md
@@ -1,6 +1,6 @@
 # 0125. 验证回文串 Valid Palindrome
 
-[问题描述](../problems/0125.valid-palindrome/content.html)
+[问题描述](https://leetcode.com/problems/valid-palindrome)
 
 ## 靠拢型双指针
 
diff --git a/src/leetcode/0136.single-number/index.md b/src/leetcode/0136.single-number/index.md
index a071634b..ae638344 100644
--- a/src/leetcode/0136.single-number/index.md
+++ b/src/leetcode/0136.single-number/index.md
@@ -1,6 +1,6 @@
 # 0136. Single Number
 
-[问题描述](../problems/0136.single-number/content.html)
+[问题描述](https://leetcode.com/problems/single-number)
 
 这个问题考察的是比特位异或操作中的一个重要特性: `A XOR A == 0`.
 
diff --git a/src/leetcode/0137.single-number-ii/index.md b/src/leetcode/0137.single-number-ii/index.md
index 99be8435..8c64c9e4 100644
--- a/src/leetcode/0137.single-number-ii/index.md
+++ b/src/leetcode/0137.single-number-ii/index.md
@@ -1,6 +1,6 @@
 # 0137. Single Number II
 
-[问题描述](../problems/0137.single-number-ii/content.html)
+[问题描述](https://leetcode.com/problems/single-number-ii)
 
 ## 第一种思路, 使用字典来计数
 
diff --git a/src/leetcode/0167.two-sum-ii-input-array-is-sorted/index.md b/src/leetcode/0167.two-sum-ii-input-array-is-sorted/index.md
index ed975826..15fb489b 100644
--- a/src/leetcode/0167.two-sum-ii-input-array-is-sorted/index.md
+++ b/src/leetcode/0167.two-sum-ii-input-array-is-sorted/index.md
@@ -1,6 +1,6 @@
 # 0167. 两数之和 II - 输入有序数组 Two Sum II - Input Array Is Sorted
 
-[问题描述](../problems/0167.two-sum-ii-input-array-is-sorted/content.html)
+[问题描述](https://leetcode.com/problems/two-sum-ii-input-array-is-sorted)
 
 ## 靠拢型双指针
 
diff --git a/src/leetcode/0191.number-of-1-bits/index.md b/src/leetcode/0191.number-of-1-bits/index.md
index fb826af3..bb1bd109 100644
--- a/src/leetcode/0191.number-of-1-bits/index.md
+++ b/src/leetcode/0191.number-of-1-bits/index.md
@@ -1,6 +1,6 @@
 # 0191. Number of 1 Bits
 
-[问题描述](../problems/0191.number-of-1-bits/content.html)
+[问题描述](https://leetcode.com/problems/number-of-1-bits)
 
 这个题目考察位操作的.
 
diff --git a/src/leetcode/0217.contains-duplicate/index.md b/src/leetcode/0217.contains-duplicate/index.md
index 2ad615ae..a65ac08d 100644
--- a/src/leetcode/0217.contains-duplicate/index.md
+++ b/src/leetcode/0217.contains-duplicate/index.md
@@ -1,6 +1,6 @@
 # 0217. 存在重复元素 Contains Duplicate
 
-[问题描述](../problems/0217.contains-duplicate/content.html)
+[问题描述](https://leetcode.com/problems/contains-duplicate)
 
 ## 方法1, Brute Force
 
diff --git a/src/leetcode/0219.contains-duplicate-ii/index.md b/src/leetcode/0219.contains-duplicate-ii/index.md
index a604ba38..9df60abe 100644
--- a/src/leetcode/0219.contains-duplicate-ii/index.md
+++ b/src/leetcode/0219.contains-duplicate-ii/index.md
@@ -1,6 +1,6 @@
 # 0219. 存在重复元素II Contains Duplicate II
 
-[问题描述](../problems/0219.contains-duplicate-ii/content.html)
+[问题描述](https://leetcode.com/problems/contains-duplicate-ii)
 
 这个问题与 [0001. 两数之和 Two Sum](../0001.two-sum/index.md) 很相似,
 而且其解法也都是一样的.
diff --git a/src/leetcode/0231.power-of-two/index.md b/src/leetcode/0231.power-of-two/index.md
index bfea9a50..6f27d89c 100644
--- a/src/leetcode/0231.power-of-two/index.md
+++ b/src/leetcode/0231.power-of-two/index.md
@@ -1,6 +1,6 @@
 # 0231. 2的幂 Power of Two
 
-[问题描述](../problems/0231.power-of-two/content.html)
+[问题描述](https://leetcode.com/problems/power-of-two)
 
 所有小于1的整数, 都不是2的次幂, 这样就可以过滤到一半的整数了.
 
diff --git a/src/leetcode/0234.palindrome-linked-list/index.md b/src/leetcode/0234.palindrome-linked-list/index.md
index cfdbe7c1..8ddb33fe 100644
--- a/src/leetcode/0234.palindrome-linked-list/index.md
+++ b/src/leetcode/0234.palindrome-linked-list/index.md
@@ -1,3 +1,5 @@
 # 0234. 回文链表 Palindrome Linked List
 
+[问题描述](https://leetcode.com/problems/palindrome-linked-list)
+
 TODO(shaohua)
\ No newline at end of file
diff --git a/src/leetcode/0326.power-of-three/index.md b/src/leetcode/0326.power-of-three/index.md
index f426de7e..7a0dd38b 100644
--- a/src/leetcode/0326.power-of-three/index.md
+++ b/src/leetcode/0326.power-of-three/index.md
@@ -1,6 +1,6 @@
 # 0326. 3的幂 Power of Three
 
-[问题描述](../problems/0326.power-of-three/content.html)
+[问题描述](https://leetcode.com/problems/power-of-three)
 
 可以看一下下面列出的相关问题, 这三个问题有相同的解法, 也有不同的解法.
 
diff --git a/src/leetcode/0338.counting-bits/index.md b/src/leetcode/0338.counting-bits/index.md
index 915d0ebe..f17eb890 100644
--- a/src/leetcode/0338.counting-bits/index.md
+++ b/src/leetcode/0338.counting-bits/index.md
@@ -1,6 +1,6 @@
 # 0338. 比特位计数 Counting Bits
 
-[问题描述](../problems/0338.counting-bits/content.html)
+[问题描述](https://leetcode.com/problems/counting-bits)
 
 ## 方法1, Brute Force
 
diff --git a/src/leetcode/0342.power-of-four/index.md b/src/leetcode/0342.power-of-four/index.md
index 36cffa91..2eee6ffa 100644
--- a/src/leetcode/0342.power-of-four/index.md
+++ b/src/leetcode/0342.power-of-four/index.md
@@ -1,6 +1,6 @@
 # 0342. 4的幂 Power of Four
 
-[问题描述](../problems/0342.power-of-four/content.html)
+[问题描述](https://leetcode.com/problems/power-of-four)
 
 这个问题与 [0231. 2 的幂 Power of Two](../0231.power-of-two/index.md) 很相似,
 可以参考下它的解法.
diff --git a/src/leetcode/0349.intersection-of-two-arrays/index.md b/src/leetcode/0349.intersection-of-two-arrays/index.md
index 6aa8f316..828336f7 100644
--- a/src/leetcode/0349.intersection-of-two-arrays/index.md
+++ b/src/leetcode/0349.intersection-of-two-arrays/index.md
@@ -1,6 +1,6 @@
 # 0349. 两个数组的交集 Intersection of Two Arrays
 
-[问题描述](../problems/0349.intersection-of-two-arrays/content.html)
+[问题描述](https://leetcode.com/problems/intersection-of-two-arrays)
 
 这是一个搜索问题, 这个问题的解法就比较多了.
 
diff --git a/src/leetcode/0350.intersection-of-two-arrays-ii/index.md b/src/leetcode/0350.intersection-of-two-arrays-ii/index.md
index e9f21362..658b03c6 100644
--- a/src/leetcode/0350.intersection-of-two-arrays-ii/index.md
+++ b/src/leetcode/0350.intersection-of-two-arrays-ii/index.md
@@ -1,6 +1,6 @@
 # 0350. 两个数组的交集 II Intersection of Two Arrays II
 
-[问题描述](../problems/0350.intersection-of-two-arrays-ii/content.html)
+[问题描述](https://leetcode.com/problems/intersection-of-two-arrays-ii)
 
 这类问题在 [0349. 两个数组的交集 Intersection of Two Arrays](../0349.intersection-of-two-arrays/index.md) 中
 有好几个解法.
diff --git a/src/leetcode/0485.max-consecutive-ones/index.md b/src/leetcode/0485.max-consecutive-ones/index.md
index 760ef64b..423fe262 100644
--- a/src/leetcode/0485.max-consecutive-ones/index.md
+++ b/src/leetcode/0485.max-consecutive-ones/index.md
@@ -1,6 +1,6 @@
 # 0485. 最大连续1的个数 Max Consecutive Ones
 
-[问题描述](../problems/0485.max-consecutive-ones/content.html)
+[问题描述](https://leetcode.com/problems/max-consecutive-ones)
 
 ## 滑动窗口
 
diff --git a/src/leetcode/0532.k-diff-pairs-in-an-array/index.md b/src/leetcode/0532.k-diff-pairs-in-an-array/index.md
index e5981a86..579a3513 100644
--- a/src/leetcode/0532.k-diff-pairs-in-an-array/index.md
+++ b/src/leetcode/0532.k-diff-pairs-in-an-array/index.md
@@ -1,6 +1,6 @@
 # 0532.数组中的数对 K-diff Pairs in an Array
 
-[问题描述](../problems/0532.k-diff-pairs-in-an-array/content.html)
+[问题描述](https://leetcode.com/problems/k-diff-pairs-in-an-array)
 
 这是一个查找问题, 先思考一下处理查找问题的常用手段:
 
diff --git a/src/leetcode/0679.24-game/index.md b/src/leetcode/0679.24-game/index.md
index 25c1ee74..f18e09ff 100644
--- a/src/leetcode/0679.24-game/index.md
+++ b/src/leetcode/0679.24-game/index.md
@@ -1,3 +1,5 @@
 # 0679. 24 点游戏 24 Game
 
-[问题描述](../problems/0679.24-game/content.html)
+[问题描述](https://leetcode.com/problems/24-game)
+
+TODO(Shaohua):
diff --git a/src/leetcode/0680.valid-palindrome-ii/index.md b/src/leetcode/0680.valid-palindrome-ii/index.md
index b2f9d14c..dd2f2bd7 100644
--- a/src/leetcode/0680.valid-palindrome-ii/index.md
+++ b/src/leetcode/0680.valid-palindrome-ii/index.md
@@ -1,6 +1,6 @@
 # 0680. 验证回文串 II Valid Palindrome II
 
-[问题描述](../problems/0680.valid-palindrome-ii/content.html)
+[问题描述](https://leetcode.com/problems/valid-palindrome-ii)
 
 在Rust中处理字符串, 远不如处理 `Vec<u8>` 或者 slice 简单, 所以这里我们在有必要时, 先把字符串
 转换成数组: `let bytes = s.as_bytes();`
diff --git a/src/leetcode/0707.design-linked-list/index.md b/src/leetcode/0707.design-linked-list/index.md
index 4e220553..db8b2b86 100644
--- a/src/leetcode/0707.design-linked-list/index.md
+++ b/src/leetcode/0707.design-linked-list/index.md
@@ -1,3 +1,5 @@
 # 0707. 设计链表 Design Linked List
 
-[问题描述](../problems/0707.design-linked-list/content.html)
+[问题描述](https://leetcode.com/problems/design-linked-list)
+
+TODO(Shaohua):
diff --git a/src/leetcode/0925.long-pressed-name/index.md b/src/leetcode/0925.long-pressed-name/index.md
index 4cea9d03..ab5c3683 100644
--- a/src/leetcode/0925.long-pressed-name/index.md
+++ b/src/leetcode/0925.long-pressed-name/index.md
@@ -1,6 +1,6 @@
 # 0925. 长按键入 Long Pressed Name
 
-[问题描述](../problems/0925.long-pressed-name/content.html)
+[问题描述](https://leetcode.com/problems/long-pressed-name)
 
 ## 并行双指针
 
diff --git a/src/leetcode/0977.squares-of-a-sorted-array/index.md b/src/leetcode/0977.squares-of-a-sorted-array/index.md
index a30bc6b1..27f1b3e2 100644
--- a/src/leetcode/0977.squares-of-a-sorted-array/index.md
+++ b/src/leetcode/0977.squares-of-a-sorted-array/index.md
@@ -1,5 +1,5 @@
 # 0977. 有序数组的平方 Squares of a Sorted Array
 
-[问题描述](../problems/0977.squares-of-a-sorted-array/content.html)
+[问题描述](https://leetcode.com/problems/squares-of-a-sorted-array)
 
 TODO(Shaohua):
\ No newline at end of file
diff --git a/src/leetcode/1498.number-of-subsequences-that-satisfy-the-given-sum-condition/index.md b/src/leetcode/1498.number-of-subsequences-that-satisfy-the-given-sum-condition/index.md
index e69de29b..33cc364c 100644
--- a/src/leetcode/1498.number-of-subsequences-that-satisfy-the-given-sum-condition/index.md
+++ b/src/leetcode/1498.number-of-subsequences-that-satisfy-the-given-sum-condition/index.md
@@ -0,0 +1,5 @@
+# 1498. 满足条件的子序列数目 Number of Subsequences That Satisfy the Given Sum Condition
+
+[问题描述](https://leetcode.com/problems/number-of-subsequences-that-satisfy-the-given-sum-condition)
+
+TODO(Shaohua):
\ No newline at end of file
diff --git a/src/leetcode/1518.water-bottles/index.md b/src/leetcode/1518.water-bottles/index.md
index 4e17199f..1eb41968 100644
--- a/src/leetcode/1518.water-bottles/index.md
+++ b/src/leetcode/1518.water-bottles/index.md
@@ -1,6 +1,6 @@
 # 1518. 换水问题 Water Bottles
 
-[问题描述](../problems/1518.water-bottles/content.html)
+[问题描述](https://leetcode.com/problems/water-bottles)
 
 所谓的兑换空瓶子, 问题就是 **商与余数(DivMod)** 的问题.
 
diff --git a/src/leetcode/1780.check-if-number-is-a-sum-of-powers-of-three/index.md b/src/leetcode/1780.check-if-number-is-a-sum-of-powers-of-three/index.md
index cf9ae74b..78d974bf 100644
--- a/src/leetcode/1780.check-if-number-is-a-sum-of-powers-of-three/index.md
+++ b/src/leetcode/1780.check-if-number-is-a-sum-of-powers-of-three/index.md
@@ -1,6 +1,6 @@
 # 1780. 判断一个数字是否可以表示成三的幂的和 Check if Number is a Sum of Powers of Three
 
-[问题描述](../problems/1780.check-if-number-is-a-sum-of-powers-of-three/content.html)
+[问题描述](https://leetcode.com/problems/check-if-number-is-a-sum-of-powers-of-three)
 
 这个题目比较费脑子, 要反复仔细考虑题目里的细节, 这算是个数学问题.
 
diff --git a/src/leetcode/2108.find-first-palindromic-string-in-the-array/index.md b/src/leetcode/2108.find-first-palindromic-string-in-the-array/index.md
index c3b2bb77..775301de 100644
--- a/src/leetcode/2108.find-first-palindromic-string-in-the-array/index.md
+++ b/src/leetcode/2108.find-first-palindromic-string-in-the-array/index.md
@@ -1,6 +1,6 @@
 # 2108. 找出数组中的第一个回文字符串 Find First Palindromic String in the Array
 
-[问题描述](../problems/2108.find-first-palindromic-string-in-the-array/content.html)
+[问题描述](https://leetcode.com/problems/find-first-palindromic-string-in-the-array)
 
 这道题与 [0125. 验证回文串 Valid Palindrome](../0125.valid-palindrome/index.md) 基本一致,
 只是多了一个循环遍历, 将不再讲解.
diff --git a/src/leetcode/2119.a-number-after-a-double-reversal/index.md b/src/leetcode/2119.a-number-after-a-double-reversal/index.md
index 0324df54..ed398ada 100644
--- a/src/leetcode/2119.a-number-after-a-double-reversal/index.md
+++ b/src/leetcode/2119.a-number-after-a-double-reversal/index.md
@@ -1,6 +1,6 @@
 # 2119. 反转两次的数字 A Number After a Double Reversal
 
-[问题描述](../problems/2119.a-number-after-a-double-reversal/content.html)
+[问题描述](https://leetcode.com/problems/a-number-after-a-double-reversal)
 
 仔细分析这个问题, 可以发现一个细节: 只要在反转时不丢弃任何一个数字, 才能保证两次反转后的整数值不变.