Leecode高频面试题目

作者: 闫阿佳 | 来源:发表于2017-09-08 11:01 被阅读0次

ID	问题	频率	数据结构	算法
1	Two Sum	5	array、set	sort、Two Pointers
8	String to Integer (atoi)	5	string	Math
20	Valid Parentheses	5	string	Stack
15	3Sum	5	array	Two Pointers
21	Merge Two Sorted Lists	5	linked list	sort、Two Pointers、merge
28	Implement strStr()	5	string	Two Pointers、KMP、rolling hash
50	Pow(x, n)	5	Binary	Search、Math
56	Merge Intervals	5	Array,linklist,rb tree	sort、merge
57	Insert Interval	5	array	sort
65	Valid Number	5	string	Math
73	Set Matrix Zeroes	5	array	-
88	Merge Sorted Array	5	array	Two Pointers、merge
98	Validate Binary Search Tree	5	tree	DFS
125	Valid Palindrome	5	string	Two Pointers
127	Word Ladder	5	graph	BFS、path
5	Longest Palindromic Substring	5	string	5
2	Add Two Numbers	4	linked list	Two Pointers、Math
12	Integer to Roman	4	-	Math
13	Roman to Integer	4	-	Math
22	Generate Parentheses	4	string	DFS
23	Merge k Sorted Lists	4	linked list	heap sort、Two Pointersmerge
24	Swap Nodes in Pairs	4	linked list	-
27	Remove Element	4	array	Two Pointers
46	Permutations	4	array	permutation
49	Anagrams	4	string	hashtable
67	Add Binary	4	string	Two Pointers、Math
69	Sqrt(x)	4	-	Binary Search
77	Combinations	4	-	combination
78	Subsets	4	array	Recursion、combination
79	Word Search	4	array	DFS
91	Decode Ways	4	string	Recursion、DP
102	Binary Tree Level Order Traversal	4	tree	BFS
129	Sum Root to Leaf Numbers	4	tree	DFS
131	Palindrome Partitioning	4	string	DFS
4	Median of Two Sorted Arrays	3	array	Binary Search
7	Reverse Integer	3	-	Math
10	Regular Expression Matching	3	string	Recursion、DP
17	Letter Combinations of a Phone Number	3	string	DFS
19	Remove Nth Node From End of List	3	linked list	Two Pointers
26	Remove Duplicates from Sorted Array	3	array	Two Pointers
29	Divide Two Integers	3	-	Binary Search
33	Search in Rotated Sorted Array	3	array	Binary Search
34	Search for a Range	3	array	Binary Search
39	Combination Sum	3	array	combination
43	Multiply Strings	3	string	Two Pointers、Math
44	Wildcard Matching	3	string	Recursion、DP、greedy

各个频率的题目总结如下：
频率5 http://www.jianshu.com/p/f1b154c780c6
频率4 http://www.jianshu.com/p/9988972fd346
频率3 http://www.jianshu.com/p/41a6bf4558f8

算法珠玑（包括C++和Java版本）

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