Hackerrank exercises (47 solved)

Title	Hackerrank	My Solution
2d array	[Link]	[Link]
Alternating characters	[Link]	[Link]
Angry children	[Link]	[Link]
Balanced brackets	[Link]	[Link]
Binary search tree lowest common ancestor	[Link]	[Link]
Candies	[Link]	[Link]
Common child	[Link]	[Link]
Count triplets 1	[Link]	[Link]
Counting valleys	[Link]	[Link]
Crossword puzzle	[Link]	[Link]
Ctci array left rotation	[Link]	[Link]
Ctci big o	[Link]	[Link]
Ctci bubble sort	[Link]	[Link]
Ctci fibonacci numbers	[Link]	[Link]
Ctci ice cream parlor	[Link]	[Link]
Ctci is binary search tree	[Link]	[Link]
Ctci linked list cycle	[Link]	[Link]
Ctci making anagrams	[Link]	[Link]
Ctci queue using two stacks	[Link]	[Link]
Ctci ransom note	[Link]	[Link]
Ctci recursive staircase	[Link]	[Link]
Find the merge point of two joined linked lists	[Link]	[Link]
Flipping bits	[Link]	[Link]
Friend circle queries	[Link]	[Link]
Greedy florist	[Link]	[Link]
Insert a node at a specific position in a linked list	[Link]	[Link]
Insert a node into a sorted doubly linked list	[Link]	[Link]
Jumping on the clouds	[Link]	[Link]
Largest rectangle	[Link]	[Link]
Luck balance	[Link]	[Link]
Mark and toys	[Link]	[Link]
Max array sum	[Link]	[Link]
Minimum absolute difference in an array	[Link]	[Link]
New year chaos	[Link]	[Link]
Pairs	[Link]	[Link]
Recursive digit sum	[Link]	[Link]
Repeated string	[Link]	[Link]
Reverse a doubly linked list	[Link]	[Link]
Sherlock and anagrams	[Link]	[Link]
Sherlock and valid string	[Link]	[Link]
Sock merchant	[Link]	[Link]
Special palindrome again	[Link]	[Link]
Swap nodes algo	[Link]	[Link]
Tree height of a binary tree	[Link]	[Link]
Tree huffman decoding	[Link]	[Link]
Triple sum	[Link]	[Link]
Two strings	[Link]	[Link]