mhcrnl / leetcode

leetcode solution in java

LeetCode

leetcode solution in java

#	Title	Solution	Difficulty
242	Valid Anagram	java	easy
241	Different Ways to Add Parentheses	java	medium
240	Search a 2D Matrix II	java	medium
239	Sliding Window Maximum	java	hard
238	Product of Array Except Self	java	medium
237	Delete Node in a Linked List	java	easy
236	Lowest Common Ancestor of a Binary Tree	java	medium
235	Lowest Common Ancestor of a Binary Search Tree	java	easy
234	Palindrome Linked List	java	easy
233	Number of Digit One	java	medium
232	Implement Queue using Stacks	java	easy
231	Power of Two	java	easy
230	Kth Smallest Element in a BST	java	medium
229	Majority Element II	java	medium
228	Summary Ranges	java	easy
227	Basic Calculator II	java	medium
226	Invert Binary Tree	java	easy
225	Implement Stack using Queues	java	medium
224	Basic Calculator	java	medium
223	Rectangle Area	java	easy
222	Count Complete Tree Nodes	java	medium
221	Maximal Square	java	medium
220	Contains Duplicate III	java	medium
219	Contains Duplicate II	java	easy
217	Contains Duplicate	java	easy
216	Combination Sum III	java	medium
215	Kth Largest Element in an Array	java	medium
213	House Robber II	java	medium
212	Word Search II	java	hard
211	Add and Search Word - Data structure design	java	medium
210	Course Schedule II	java	medium
209	Minimum Size Subarray Sum	java	medium
208	Implement Trie (Prefix Tree)	java	medium
207	Course Schedule	java	medium
206	Reverse Linked List	java	easy
205	Isomorphic Strings	java	easy
204	Count Primes	java	easy
203	Remove Linked List Elements	java	easy
202	Happy Number	java	easy
201	Bitwise AND of Numbers Range	java	medium
200	Number of Islands	java	medium
199	Binary Tree Right Side View	java	medium
198	House Robber	java	easy
191	Number of 1 Bits	java	easy
190	Reverse Bits	java	easy
189	Rotate Array	java	easy
187	Repeated DNA Sequences	java	medium
179	Largest Number	java	medium
174	Dungeon Game	java	hard
173	Binary Search Tree Iterator	java	medium
172	Factorial Trailing Zeroes	java	easy
171	Excel Sheet Column Number	java	easy
169	Majority Element	java	easy
168	Excel Sheet Column Title	java	easy
165	Compare Version Numbers	java	easy
162	Find Peak Element	java	medium
160	Intersection of Two Linked Lists	java	easy
155	Min Stack	java	easy
154	Find Minimum in Rotated Sorted Array II	java	Hard
153	Find Minimum in Rotated Sorted Array	java	medium
152	Maximum Product Subarray	java	medium
151	Reverse Words in a String	java	medium
150	Evaluate Reverse Polish Notation	java	medium
147	Insertion Sort List	java	medium
145	Binary Tree Postorder Traversal	java	hard
144	Binary Tree Preorder Traversal	java	medium
143	Reorder List	java	medium
142	Linked List Cycle II	java	medium
141	Linked List Cycle	java	medium
139	Word Break	java	medium
138	Copy List with Random Pointer	java	hard
137	Single Number II	java	medium
136	Single Number	java	medium
135	Candy	java	hard
134	Gas Station	java	medium
133	Clone Graph	java	medium
132	Palindrome Partitioning II	java	hard
131	Palindrome Partitioning	java	medium
130	Surrounded Regions	java	medium
129	Sum Root to Leaf Numbers	java	medium
128	Longest Consecutive Sequence	java	hard
127	Word Ladder	java	medium
125	Valid Palindrome	java	easy
124	Binary Tree Maximum Path Sum	java	hard
122	Best Time to Buy and Sell Stock II	java	medium
121	Best Time to Buy and Sell Stock	java	medium
120	Triangle	java	medium
119	Pascal's Triangle II	java	easy
118	PPascal's Triangle	java	easy
116	Populating Next Right Pointers in Each Node	java	medium
115	Distinct Subsequences	java	hard
114	Flatten Binary Tree to Linked List	java	medium
113	Path Sum II	java	medium
112	Path Sum	java	easy
111	Minimum Depth of Binary Tree	java	easy
110	Balanced Binary Tree	java	easy
108	Convert Sorted Array to Binary Search Tree	java	medium
107	Binary Tree Level Order Traversal II	java	easy
104	Maximum Depth of Binary Tree	java	easy
102	Binary Tree Level Order Traversal	java	easy
101	Symmetric Tree	java	easy
100	Same Tree	java	easy
98	Validate Binary Search Tree	java	medium
97	Interleaving String	java	hard
96	Unique Binary Search Trees	java	medium
95	Unique Binary Search TreesII	java	medium
94	Binary Tree Inorder Traversal	java	medium
93	Restore IP Addresses	java	medium
92	Reverse Linked List II	java	medium
91	Decode Ways	java	medium
90	Subsets II	java	medium
89	Gray Code	java	medium
88	Merge Sorted Array	java	easy
86	Partition List	java	medium
84	Largest Rectangle in Histogram	java	hard
83	Remove Duplicates from Sorted List	java	easy
82	Remove Duplicates from Sorted List II	java	medium
80	Remove Duplicates from Sorted Array II	java	medium
78	Subsets	java	medium
77	Combinations	java	medium
76	Minimum Window Substring	java	hard
75	Sort Colors	java	medium
74	Search a 2D Matrix	java	medium
73	Set Matrix Zeroes	java	medium
72	Edit Distance	java	hard
71	Simplify Path	java	medium
70	Climbing Stairs	java	easy
69	Sqrt(x)	java	medium
67	Add Binary	java	easy
66	Plus One	java	easy
64	Minimum Path Sum	java	medium
63	Unique Paths II	java	medium
62	Unique Paths	java	medium
61	Rotate List	java	medium
59	Spiral Matrix II	java	medium
58	Length of Last Word	java	easy
57	Insert Interval	java	hard
56	Merge Intervals	java	hard
55	Jump Game	java	medium
54	Spiral Matrix	java	medium
53	Maximum Subarray	java	medium
52	N-Queens II	java	hard
51	N-Queens	java	hard
50	Pow(x, n)	java	medium
49	Anagrams	java	medium
46	Permutations	java	medium
45	Jump Game II	java	hard
43	Multiply Strings	java	medium
42	Trapping Rain Water	java	hard
41	First Missing Positive	java	hard
40	Combination Sum II	java	medium
39	Combination Sum	java	medium
38	Count and Say	java	easy
36	Valid Sudoku	java	easy
35	Search Insert Position	java	medium
34	Search for a Range	java	medium
32	Longest Valid Parentheses	java	hard
31	Next Permutation	java	medium
29	Divide Two Integers	java	medium
28	Implement strStr()	java	easy
27	Remove Element	java	easy
26	Remove Duplicates from Sorted Array	java	easy
24	Swap Nodes in Pairs	java	medium
23	Merge k Sorted Lists	java	hard
22	Generate Parentheses	java	medium
21	Merge Two Sorted Lists	java	easy
20	Valid Parentheses	java	easy
19	Remove Nth Node From End of List	java	easy
18	4Sum	java	medium
17	Letter Combinations of a Phone Number	java	medium
16	3Sum Closest	java	medium
15	3Sum	java	medium
14	Longest Common Prefix	java	easy
13	Roman to Integer	java	easy
12	Integer to Roman	java	medium
11	Container With Most Water	java	medium
9	Palindrome Number	java	easy
8	String to Integer (atoi)	java	easy
7	Reverse Integer	java	easy
6	ZigZag Conversion	java	easy
5	Longest Palindromic Substring	java	medium
3	Longest Substring Without Repeating Characters	java	medium
2	Add Two Numbers	java	medium
1	Two Sum	java	medium