HackerRank Solutions

Algorithms

Warmup

Challenge	Solution	Difficult Level
Solve Me First	solve_me_first.py	Easy
Simple Array Sum	simple_array_sum.py	Easy
Compare The Triplets	compare_triplets.py	Easy
A Very Big Sum	very_big_sum.py	Easy
Diagonal Difference	diagonal_difference.py	Easy
Plus Minus	plus_minus.py	Easy
Staircase	staircase.py	Easy
Mini-Max Sum	mini_max_sum.py	Easy
Time Conversion	time_conversion.py	Easy
Birthday Cake Candles	birthday_cake_candles.py	Easy

Implementation

Challenge	Solution	Difficult Level
Grading Students	grading.py	Easy
Apple and Orange	apple_and_orange.py	Easy
Kangaroo	kangaroo.py	Easy
Between Two Sets	between_two_sets.py	Easy
Breaking the Records	breaking_best_and_worst_records.py	Easy
Birthday Chocolate	the_birthday_bar.py	Easy
Divisible Sum Pairs	divisible_sum_pairs.py	Easy
Migratory Birds	migratory_birds.py	Easy
Bon Appétit	bon_appetit.py	Easy
Sock Merchant	sock_merchant.py	Easy
Drawing Book	drawing_book.py	Easy

Data Structures

Arrays

Challenge	Solution	Difficult Level
Arrays - DS	array_ds.py	Easy
2D Array - DS	2d_array.py	Easy
Dynamic Array	dynamic_array.py	Easy
Left Rotation	array_left_rotation.py	Easy
Sparse Arrays	sparse_arrays.py	Medium
Algorithmic Crush	crush.py	Hard

Linked Lists

Challenge	Solution	Difficult Level
Print the Elements of a Linked List	print_the_elements_of_a_linked_list.py	Easy
Insert a Node at the Tail of a Linked List	insert_a_node_at_tail_of_linked_list.py	Easy
Insert a node at the head of a linked list	insert_a_node_at_head_of_linked_list.py	Easy
Insert a node at a specific position in a linked list	insert_a_node_at_specific_position_of_linked_list.py	Easy
Delete a Node	delete_a_node_from_linked_list.py	Easy
Print in Reverse	print_elements_of_linked_list_in_reverse.py	Easy
Reverse a linked list	reverse_a_linked_list.py	Easy
Compare two linked lists	compare_two_linked_lists.py	Easy
Get Node Value	get_the_value_of_node_at_specific_position_from_tail.py	Easy
Delete duplicate-value nodes from a sorted linked list	delete_duplicate_value_nodes_from_sorted_linked_list.py	Easy
Cycle Detection	detect_whether_a_linked_list_contains_cycle.py	Medium
Find Merge Point of Two Lists	find_merge_point_of_two_joined_linked_lists.py	Easy
Inserting a Node Into a Sorted Doubly Linked List	insert_node_into_sorted_doubly_linked_list.py	Easy
Reverse a doubly linked list	reverse_doubly_linked_list.py	Easy

Trees

Challenge	Solution	Difficult Level
Tree: Preorder Traversal	preorder_traversal.py	Easy
Tree: Postorder Traversal	postorder_traversal.py	Easy
Tree: Inorder Traversal	inorder_traversal.py	Easy
Tree: Height of a Binary Tree	height_of_binary_tree.py	Easy
Tree : Top View	tree_top_view.cpp	Easy

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