LC-Solutions

These are my solutions to LeetCode problems.

Progress: Solved 485/1397.

Arrays

#	Title	Solution	Difficulty
1	Two Sum	Java	Easy
7	Reverse Integer	Java	Easy
26	Remove Duplicates from Sorted Array	Java	Medium
36	Valid Sudoku	Java	Medium
46	Permutations	Java	Medium
56	Merge Intervals	Java	Medium
66	Plus One	Java	Easy
70	Climbing Stairs	Java	Easy
73	Set Matrix Zeroes	Java	Medium
75	Sort Colors	Java	Medium
77	Combinations	Java	Medium
78	Subsets	Java	Medium
80	Remove Duplicates from Sorted Array II	Java	Medium
88	Merge Sorted Array	Java	Easy
118	Pascals Triangle	Java	Easy
119	Pascals Triangle II	Java	Easy
121	Best Time to Buy and Sell Stock	Java	Easy
122	Best Time to Buy and Sell Stock II	Java	Easy
134	Gas Station	Java	Medium
136	Single Number	Java	Easy
169	Majority Element	Java	Easy
189	Rotate Array	Java	Easy
209	Minimum Size Subarray Sum	Java	Medium
217	Contains Duplicate	Java	Easy
229	Majority Element II	Java	Medium
238	Product Of Array Except Self	Java	Easy
268	Missing Number	Java	Easy
283	Move Zeros	Java	Easy
287	Find Dupliate Number	Java	Medium
349	Intersect Of Arrays	Java	Easy
350	Intersect Of Arrays II	Java	Easy
414	Third Max	Java	Easy
442	Find All Duplicates in Array	Java	Medium
485	Max Consecutive Ones	Java	Easy
496	Next Greater Element	Java	Easy
566	Reshap The Matrix	Java	Easy
665	Non Decreasing Array	Java	Easy
832	Flipping an Image	Java	Easy
852	Peak index in a mountain array	Java	Easy
896	Monotonic Array	Java	Easy
905	Sort Array by Parity	Java	Easy
922	Sort Array by Parity II	Java	Easy
931	Minimum Falling Path	Java	Medium
961	N Repeated Element in Size 2n Array	Java	Easy
969	Pancake Sorting	Java	Medium
985	Sum of Even Numbers After Queries	Java	Easy
986	Interval List Intersections	Java	Medium

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Trees

#	Title	Solution	Difficulty
94	Binary Tree Inorder Traversal	Java	Medium
98	Validate Binary Search Tree	Java	Medium
101	Symmetric Tree	Java	Easy
104	Maximum Depth of Binary Tree	Java	Easy
108	Convert Sorted Array to BST	Java	Easy
112	Path Sum	Java	Easy
129	Sum Root-to-Leaf Numbers	Java	Medium
226	Invert Binary Tree	Java	Easy
230	Kth Smallest Element in A BST	Java	Easy
429	N-ary Tree Level Order Traversal	Java	Easy
513	Find Bottom Left Tree Value	Java	Medium
515	Find Largest Value In Each Tree Row	Java	Medium
538	Convert BST To Greater Tree	Java	Easy
543	Diameter of Binary Tree	Java	Easy
559	Maximum Depth of N-ary Tree	Java	Easy
589	N-ary Tree Preorder Traversal	Java	Easy
590	N-ary Tree Postorder Traversal	Java	Easy
617	Merge Two Binary Trees	Java	Easy
637	Average of Levels in Binary Tree	Java	Easy
654	Maximum Binary Tree	Java	Medium
669	Trim a Binary Search Tree	Java	Easy
700	Search in a BST	Java	Easy
701	Insert into a BST	Java	Medium
872	Leaf Similar Trees	Java	Easy
897	Increasing Order Search Tree	Java	Easy
938	Range Sum of BST	Java	Medium
951	Flip Equivalent Binary Trees	Java	Medium
965	Univalued Binary Tree	Java	Easy

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Strings

#	Title	Solution	Difficulty
8	String to Integer(atoi)	Java	Medium
13	Roman to Integer	Java	Easy
14	Longest Common Prefix	Java	Easy
28	Implement strStr()	Java	Easy
49	Group Anagrams	Java	Medium
58	Length of Last Word	Java	Easy
76	Minimum Window Substring	Java	Hard
125	Valid Palindrome	Java	Easy
150	Evaluate Reverse Polish Notation	Java	Medium
242	Valid Anagram	Java	Easy
344	Reverse String	Java	Easy
383	Ransom Note	Java	Easy
387	First Unique Character in a String	Java	Easy
389	Find the Difference	Java	Easy
438	Find all Anagrams in a String	Java	Easy
520	Detect Capital	Java	Easy
521	Longest Uncommon Subsequence I	Java	Easy
537	Complex Number Multiplication	Java	Medium
557	Reverse Words in a String III	Java	Easy
609	Find Duplicate File in System	Java	Medium
657	Robot Return to Origin	Java	Easy
709	To Lower Case	Java	Easy
748	Shortest Completing Word	Java	Easy
763	Partition Labels	Java	Medium
771	Jewels and Stones	Java	Easy
784	Letter Case Permutation	Java	Easy
791	Custom Sort String	Java	Medium
796	Rotate String	Java	Easy
804	Unique Morse Code Words	Java	Easy
821	Shortest Distance To a Character	Java	Easy
824	Goat Latin	Java	Easy
884	Uncommon Words From Two Sentences	Java	Easy
890	Find and Replace Pattern	Java	Medium
893	Groups of Special-Equivalent Strings	Java	Easy
917	Reverse Only Letters	Java	Easy
929	Unique Email Addresses	Java	Easy
937	Reorder Log Files	Java	Easy
1002	Find Common Characters	Java	Easy
1016	Binary String with Substrings Representing 1 To N	Java	Medium

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Linked List

#	Title	Solution	Difficulty
19	Remove Nth Node From End of List	Java	Medium
21	Merge Two Sorted Lists	Java	Easy
24	Swap Nodes in Pairs	Java	Medium
61	Rotate List	Java	Medium
82	Remove Duplicates from Sorted List II	Java	Medium
83	Remove Duplicates from Sorted List	Java	Easy
86	Partition List	Java	Medium
92	Reverse Linked List II	Java	Medium
141	LinkedList Cycle	Java	Easy
142	LinkedList Cycle II	Java	Medium
143	Reorder List	Java	Medium
147	Insertion Sort Lists	Java	Medium
160	Insertion of Two Linked Lists	Java	Easy
203	Remove Linked List Elements	Java	Easy
206	Reverse Linked List	Java	Easy
234	Palindrome Linked List	Java	Easy
237	Delete Node In a Linked List	Java	Easy
328	Odd Even Linked List	Java	Medium
707	Design Linked List	Java	Easy
876	Middle Of the Linked List	Java	Easy

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Stack & Queue

#	Title	Solution	Difficulty
20	Valid Parentheses	Java	Easy
347	Top K Frequent Elements	Java	Medium
406	Queue Reconstruction By Height	Java	Medium
451	Sort Characters by Frequency	Java	Medium
739	Daily Temperatures	Java	Medium
946	Validate Stack Sequences	Java	Medium
973	K Closest Points To Origin	Java	Medium
1047	Remove All Adjacent Duplicates In String	Java	Easy

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Math

#	Title	Solution	Difficulty
69	Sqrt(x)	Java	Easy
89	Gray Code	Java	Medium
168	Excel Sheet Column Title	Java	Easy
171	Excel Sheet Column Number	Java	Easy
202	Happy Number	Java	Easy
258	Add Digits	Java	Easy
338	Counting Bits	Java	Medium
380	Insert Delete getRandom O(1)	Java	Medium
419	Battleships In a Board	Java	Medium
476	Number Complement	Java	Easy
509	Fibonacci Number	Java	Easy
575	Distribute Candies	Java	Easy
693	Binary Number with Alternating Bits	Java	Easy
728	Self Dividing Numbers	Java	Easy
868	Binary Gap	Java	Easy
942	DI String Match	Java	Easy