刷题顺序
LeetCode序号前150的题目为经典题,新手从头刷一遍
题目频率参考
前150题中频率为4, 5的为必须掌握的
出现频度为5:
- Leet Code OJ 1. Two Sum [Difficulty: Easy]
- Leet Code OJ 8. String to Integer (atoi) [Difficulty: Easy]
- Leet Code OJ 15. 3Sum [Difficulty: Medium]
- Leet Code OJ 20. Valid Parentheses [Difficulty: Easy]
- Leet Code OJ 21. Merge Two Sorted Lists [Difficulty: Easy]
- Leet Code OJ 28. Implement strStr() [Difficulty: Easy]
- Leet Code OJ 56. Merge Intervals [Difficulty: Hard]
- Leet Code OJ 57. Insert Interval [Difficulty: Hard]
- Leet Code OJ 65. Valid Number [Difficulty: Hard]
- Leet Code OJ 70. Climbing Stairs [Difficulty: Easy]
- Leet Code OJ 73. Set Matrix Zeroes [Difficulty: Medium]
- Leet Code OJ 88. Merge Sorted Array [Difficulty: Easy]
- Leet Code OJ 98. Validate Binary Search Tree [Difficulty: Medium]
- Leet Code OJ 125. Valid Palindrome [Difficulty: Easy]
- Leet Code OJ 127. Word Ladder [Difficulty: Medium]
出现频度为4:
- Leet Code OJ 2. Add Two Numbers [Difficulty: Medium]
- Leet Code OJ 12. Integer to Roman
- Leet Code OJ 13. Roman to Integer
- Leet Code OJ 22. Generate Parentheses
- Leet Code OJ 23. Merge k Sorted Lists
- Leet Code OJ 24. Swap Nodes in Pairs
- Leet Code OJ 27. Remove Element [Difficulty: Easy]
- Leet Code OJ 46. Permutations
- Leet Code OJ 49. Anagrams
- Leet Code OJ 67. Add Binary
- Leet Code OJ 69. Sqrt(x)
- Leet Code OJ 77. Combinations
- Leet Code OJ 78. Subsets
- Leet Code OJ 79. Word Search
- Leet Code OJ 91. Decode Ways [Difficulty: Medium]
- Leet Code OJ 102. Binary Tree Level Order Traversal [Difficulty: Easy]
- Leet Code OJ 129. Sum Root to Leaf Numbers
- Leet Code OJ 131. Palindrome Partitioning