LeedCde 题解目录

1. Longest Palindromic Substring ( 最长回文子串 )

2. Median of Two Sorted Arrays (两个排序数组的中位数)

3. Sqrt(x)

4. Single Number && Single Number （II）

5. Integer to Roman && Roman to Integer

6. 3Sum && 4Sum [ && K sum ] && 3Sum Closest

7. Reverse Words in a String

8. String to Integer (atoi)

9. Sort List  &&  Insertion Sort List （链表排序总结）

10. Max Points on a Line

11. Evaluate Reverse Polish Notation 

12. Binary Tree Postorder Traversal &&  Binary Tree Preorder Traversal

13. Reorder List 

14. Reverse Linked List II

15. Linked List Cycle && Linked List Cycle II

16. Copy List with Random Pointer

17. Word Break  && Word Break II

18. Word Ladder && Word Ladder II

19. Palindrome Partitioning && Palindrome Partitioning II  (Relative Problem: 1)

20. Candy && Gas Station

21. Clone Graph 

22. Surrounded Regions

23. Sum Root to Leaf Numbers

24. Longest Consecutive Sequence

25. Valid Palindrome

26. Binary Tree Maximum Path Sum

27. Best Time to Buy and Sell Stock && Best Time to Buy and Sell Stock II && Best Time to Buy and Sell Stock III

28. Triangle  &&  Pascal's Triangle  &&  Pascal's Triangle II

29. Populating Next Right Pointers in Each Node  &&  Populating Next Right Pointers in Each Node II

30. Distinct Subsequences

31. Flatten Binary Tree to Linked List

32. Path Sum  &&  Path Sum II

33. Minimum Depth of Binary Tree  &&  Balanced Binary Tree  &&　Maximum Depth of Binary Tree 

34. Convert Sorted List to Binary Search Tree  &&  Convert Sorted Array to Binary Search Tree

35. Binary Tree Level Order Traversal  &&  Binary Tree Level Order Traversal II   (Relative Problem: 12) 

36. Construct Binary Tree from Inorder and Postorder Traversal  &&  Construct Binary Tree from Preorder and Inorder Traversal

37. Binary Tree Zigzag Level Order Traversal  &&  Binary Tree Inorder Traversal   (Relative Problem: 12 35) 

38. Same Tree  &&  Symmetric Tree

39. Recover Binary Search Tree  &&  Validate Binary Search Tree

40. Interleaving String

41. Unique Binary Search Trees  &&  Unique Binary Search Trees II

42. Subsets  &&   Subsets  II 

43. Merge Sorted Array  &&   LRU Cache

44. Decode Ways  &&  Gray Code

45. Scramble String

46. Partition List

47. Largest Rectangle in Histogram  &&  Maximal Rectangle

48. Remove Duplicates from Sorted List  &&  Remove Duplicates from Sorted List II

49. Search in Rotated Sorted Array   &&  Search in Rotated Sorted Array II

50. Remove Duplicates from Sorted Array  &&  Remove Duplicates from Sorted Array II && Remove Element 

51. Word Search

52. Sort Colors   &&  Combinations

53. Minimum Window Substring

54. Search a 2D Matrix   &&   Climbing Stairs （Easy）

55. Set Matrix Zeroes

56. Edit Distance  &&  Simplify Path

57. Jump Game  &&  Jump Game II

58. N-Queens  &&  N-Queens II

59. Spiral Matrix  &&  Spiral Matrix II

60. Insert Interval && Merge Intervals

61. Unique Paths && Unique Paths II

62. Divide Two Integers 

63. Swap Nodes in Pairs  &&  Rotate List  &&  Remove Nth Node From End of List

64. ZigZag Conversion

65. Reverse Integer  &&　Palindrome Number

66. Regular Expression Matching

67. Container With Most Water

68. Longest Common Prefix

69. Letter Combinations of a Phone Number

70. Implement strStr()  与 KMP算法

71. Merge k Sorted Lists 与 指针堆的建立&删除 

72. Generate Parentheses  &&  Valid Parentheses