June-Leetcoding-Challenge

Solutions of all the programming questions in the leetcode challenge for month of June.

Name	Name	Last commit message	Last commit date
Latest commit gs146 TRIE DS Jul 1, 2020 6efddb8 · Jul 1, 2020 History 35 Commits
Cheapest Flights Within K Stops	Cheapest Flights Within K Stops	DFS+Pruning	Jun 15, 2020
Coin change 2	Coin change 2	DP it is	Jun 7, 2020
Count complete tree nodes	Count complete tree nodes	Create Count complete tree nodes	Jun 24, 2020
Delete Node in a Linked List	Delete Node in a Linked List	Create Delete Node in a Linked List	Jun 7, 2020
Find the Duplicate Number	Find the Duplicate Number	using floyd cycle detection: slow & fast pointers	Jun 26, 2020
H-Index II	H-Index II	done using binary search	Jun 18, 2020
Insert Delete GetRandom O(1)	Insert Delete GetRandom O(1)	Using vector and map	Jun 12, 2020
Invert Binary Tree	Invert Binary Tree	Create Invert Binary Tree	Jun 7, 2020
Largest Divisible Subset	Largest Divisible Subset	Create Largest Divisible Subset	Jun 13, 2020
Longest Duplicate Substring	Longest Duplicate Substring	Create Longest Duplicate Substring	Jun 20, 2020
Perfect Squares	Perfect Squares	DP	Jun 28, 2020
Permutation Sequence	Permutation Sequence	Create Permutation Sequence	Jun 20, 2020
Power of two	Power of two	using bit manipulation	Jun 8, 2020
Queue Reconstruction by height	Queue Reconstruction by height	Queue Reconstruction by height	Jun 7, 2020
README.md	README.md	Update README.md	Jun 26, 2020
Random pick with weight	Random pick with weight	Random	Jun 7, 2020
Reconstruct Itinerary	Reconstruct Itinerary	Create Reconstruct Itinerary	Jun 29, 2020
Reverse string using two pointers and recursion	Reverse string using two pointers and recursion	Two pointers and recursion	Jun 7, 2020
Search Insert position	Search Insert position	Done using Binary search	Jun 10, 2020
Search in a Binary Search Tree	Search in a Binary Search Tree	Create Search in a Binary Search Tree	Jun 16, 2020
Single number II	Single number II	sort + linear traversal: jump jump jump	Jun 22, 2020
Sorrounded regions	Sorrounded regions	using flood fill algorithm	Jun 17, 2020
Sort colours	Sort colours	Create Sort colours	Jun 12, 2020
Sum Root to Leaf Numbers	Sum Root to Leaf Numbers	Create Sum Root to Leaf Numbers	Jun 26, 2020
Two City Scheduling	Two City Scheduling	Two city scheduling	Jun 7, 2020
Unique BST	Unique BST	Catalan number	Jun 24, 2020
Unique Paths	Unique Paths	DP	Jun 29, 2020
Validate IP address	Validate IP address	Done using regex	Jun 17, 2020
Word Search II	Word Search II	TRIE DS	Jul 1, 2020
finding catalan number	finding catalan number	Create finding catalan number	Jun 24, 2020
is subsequence	is subsequence	is subsequence	Jun 9, 2020

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