[LeetCode] LeetCode 문제 및 솔루션 리스트

Easy

1. 1. Two Sum
2. 13. Roman to Integer
3. 14. Longest Common Prefix
4. 20. Valid Parentheses
5. 21. Merge Two Sorted Lists
6. 26. Remove Duplicates from Sorted Array
7. 66. Plus One
8. 69. Sqrt(x)
9. 70. Climbing Stairs
10. 88. Merge Sorted Array
11. 94. Binary Tree Inorder Traversal
12. 101. Symmetric Tree
13. 104. Maximum Depth of Binary Tree
14. 108. Convert Sorted Array to Binary Search Tree
15. 118. Pascal’s Triangle
16. 121. Best Time to Buy and Sell Stock
17. 125. Valid Palindrome
18. 136. Single Number
19. 141. Linked List Cycle
20. 160. Intersection of Two Linked Lists
21. 169. Majority Element
22. 171. Excel Sheet Column Number
23. 190. Reverse Bits
24. 191. Number of 1 Bits
25. 202. Happy Number
26. 206. Reverse Linked List
27. 217. Contains Duplicate
28. 234. Palindrome Linked List
29. 242. Valid Anagram
30. 268. Missing Number
31. 283. Move Zeroes
32. 326. Power of Three
33. 344. Reverse String
34. 350. Intersection of Two Arrays II
35. 387. First Unique Character in a String
36. 412. Fizz Buzz

Medium

1. 2. Add Two Numbers
2. 3. Longest Substring Without Repeating Characters
3. 5. Longest Palindromic Substring
4. 7. Reverse Integer
5. 8. String to Integer (atoi)
6. 11. Container With Most Water
7. 17. Letter Combinations of a Phone Number
8. 15. 3Sum
9. 19. Remove Nth Node From End of List
10. 22. Generate Parentheses
11. 28. Find the Index of the First Occurrence in a String
12. 29. Divide Two Integers
13. 33. Search in Rotated Sorted Array
14. 34. Find First and Last Position of Element in Sorted Array
15. 36. Valid Sudoku
16. 38. Count and Say
17. 46. Permutations
18. 48. Rotate Image
19. 49. Group Anagrams
20. 50. Pow(x, n)
21. 53. Maximum Subarray
22. 54. Spiral Matrix
23. 55. Jump Game
24. 56. Merge Intervals
25. 62. Unique Paths
26. 73. Set Matrix Zeroes
27. 75. Sort Colors
28. 78. Subsets
29. 79. Word Search
30. 91. Decode Ways
31. 98. Validate Binary Search Tree
32. 102. Binary Tree Level Order Traversal
33. 103. Binary Tree Zigzag Level Order Traversal
34. 105. Construct Binary Tree from Preorder and Inorder Traversal
35. 116. Populating Next Right Pointers in Each Node
36. 122. Best Time to Buy and Sell Stock II
37. 128. Longest Consecutive Sequence
38. 130. Surrounded Regions
39. 131. Palindrome Partitioning
40. 134. Gas Station
41. 138. Copy List with Random Pointer
42. 139. Word Break
43. 146. LRU Cache
44. 150. Evaluate Reverse Polish Notation
45. 152. Maximum Product Subarray
46. 155. Min Stack
47. 162. Find Peak Element
48. 166. Fraction to Recurring Decimal
49. 172. Factorial Trailing Zeroes
50. 179. Largest Number
51. 189. Rotate Array
52. 198. House Robber
53. 200. Number of Islands
54. 204. Count Primes
55. 207. Course Schedule
56. 208. Implement Trie (Prefix Tree)
57. 210. Course Schedule II
58. 227. Basic Calculator II
59. 230. Kth Smallest Element in a BST
60. 236. Lowest Common Ancestor of a Binary Tree
61. 237. Delete Node in a Linked List
62. 238. Product of Array Except Self
63. 240. Search a 2D Matrix II
64. 279. Perfect Squares
65. 287. Find the Duplicate Number
66. 289. Game of Life
67. 322. Coin Change
68. 334. Increasing Triplet Subsequence
69. 371. Sum of Two Integers
70. 378. Kth Smallest Element in a Sorted Matrix
71. 395. Longest Substring with At Least K Repeating Characters
72. 454. 4Sum II