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LeetCode Questions
1 two sum
2 add two numbers
3 longest substring without repeating characters
4 median of two sorted arrays
5 longest palindromic substring
6 two sum
7 reverse integer
8 palindrome number
9 roman to integer
10 longest common prefix
11 container with most water
12 integer to roman
13 roman to integer
14 longest common prefix
15 3sum
16 3sum closest
17 letter combinations of a phone number
18 4sum
19 remove nth node from end of list
20 valid parentheses
21 merge two sorted lists
22 generate parentheses
23 merge k sorted lists
24 swap nodes in pairs
25 reverse nodes in k group
26 remove duplicates from sorted array
27 remove element
28 implement strstr
29 divide two integers
30 substring with concatenation of all words
31 next permutation
32 longest valid parentheses
33 search in rotated sorted array
34 find first and last position of element in sorted array
35 search insert position
36 valid sudoku
37 sudoku solver
38 count and say
39 combination sum
40 combination sum ii
41 first missing positive
42 trapping rain water
43 multiply strings
44 wildcard matching
45 jump game ii
46 permutations
47 permutations ii
48 rotate image
49 group anagrams
50 powx n
5. Longest Palindromic Substring
Given a string s, return the longest palindromic substring in s.
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