This repository contains challenges of site HackerRank.

Algorithms

Subdomain	Challenge	Level	Max Score	Score Obtained
Arrays	2D Array - DS	Easy	15	15
Arrays	Arrays: Left Rotation	Easy	20	20
Arrays	Array Manipulation	Hard	60	60
Arrays	Minimum Swaps 2	Medium	40	40
Arrays	New Year Chaos	Medium	40	40
Dictionaries and Hashmaps	Frequency Queries	Medium	40	40
Dictionaries and Hashmaps	Hash Tables: Ransom Note	Easy	25	25
Dictionaries and Hashmaps	Two Strings	Easy	25	25
Dynamic Programming	Candies	Medium	50	50
Graph	Find the nearest clone	Medium	45	45
Graph	Roads and Libraries	Medium	30	30
Greedy Algorithms	Max Min	Medium	35	35
Recursion and Backtracking	Recursive Digit Sum	Medium	30	30
Search	Maximum Subarray Sum	Hard	65	65
Search	Pairs	Hard	50	50
Sorting	Bubble Sort	Easy	30	30
Sorting	Mark and Toys	Easy	35	35
Sorting	Merge Sort: Counting Inversions	Hard	45	45
Stacks	Largest Rectangle	Medium	50	50
String Manipulation	Sherlock and the Valid String	Medium	35	35
String Manipulation	Strings: Making Anagrams	Easy	25	25
Warm-up	Counting Valleys	Easy	15	15
Warm-up	Jumping on the Clouds	Easy	20	20
Warm-up	Repeated String	Easy	20	20
Warm-up	Sock Merchant	Easy	10	10

Artificial Intelligence

Subdomain	Challenge	Level	Max Score	Score Obtained
Bot Building	BotClean	Easy	17.83	17.83
Bot Building	BotClean Stochastic	Easy	10	10
Bot Building	BotClean Large	Hard	56.40	54.70
Bot Building	Bot saves princess	Easy	13.9	13.9
Statistics and Machine Learning	Matching Questions with their Answers	Hard	50	26

SQL

Challenge	Level	Max Score	Score Obtained
Weather Observation Station 5	Easy	15	15