9/4/2018
3. Longest Substring Without Repeating Characters
15. 3 Sum
16. 3 sumClosest
10/4/2018
12. Integer to Roman
19. Remove Nth Node From End of List
22. Generate Parentheses
11/4/2018
39. Combination Sum
40. Combination Sum II
46. Permutations
12/4/2018
78. Subsets
90. SubsetsII
62. Unique Paths
13/4/2018
77. Combinations
64. Minimum Path Sum
82. Remove Duplicates from Sorted List II
14/4/2018
63. Unique Paths II
15/4/2018
17. Letter Combinations of a Phone Number
16/4/2018
36. Valid Sudoku
5. Longest Palindromic Substring
34. Search for a Range
17/4/2018
22. Generate Parentheses
128. Longest Consecutive Sequence(需要重做)
129. Sum Root to Leaf Numbers
6. ZigZag Conversion
47. Permutations II
18/4/2018
102. Binary Tree Level Order Traversal
107. Binary Tree Level Order Traversal II
105. Construct Binary Tree from Preorder and Inorder Traversal
106. Construct Binary Tree from Inorder and Postorder Traversal
19/4/2018
113. Path Sum II
111. Minimum Depth of Binary Tree
144. Binary Tree Preorder Traversal
145. Binary Tree Postorder Traversal