HackerRank Solutions

• 30 Days of Code
• Data Structures
• Algorithms
• Interview Prepartion Kit
• SQL

30-Days-of-Code

Day	Challenge	Points	Solution
0	Hello, World	30	Solution.C#
1	Data Types	30	Solution.C#
2	Operators	30	Solution.C#

Algorithms

Subdomain	Challenge	Points	Solution
Warmup	Plus Minus	10	Solution.C#
Warmup	Mini-Max Sum	10	Solution.C#
Warmup	Birthday Cake Candles	10	Solution.C#
Warmup	Staircase	10	Solution.C#
Warmup	A Very Big Game	10	Solution.C#
Warmup	Compare the Triplets	10	Solution.C#
Warmup	Simple Array Sum	10	Solution.C#
Warmup	Diagonal Differences	10	Solution.C#
Warmup	Time Conversion	15	Solution.C#
Warmup	Apple and Oranges	10	Solution.C#
Warmup	Kangaroo	10	Solution.C#
Warmup	Grading	10	Solution.C#
Implementation	Picking Numbers	20	Solution.C#
Implementation	Climbing the Leaderboard	20	Solution.C#
Implementation	Sock Merchant	10	Solution.C#
Implementation	Counting Valleys	15	Solution.C#
Implementation	Jumping on the Clouds	20	Solution.C#
Implementation	Repeated String	20	Solution.C#
Implementation	Designer PDF Viewer	20	Solution.C#
Implementation	Beautiful Days at the Movies	15	Solution.C#
Implementation	Angry Professor	20	Solution.C#
Implementation	Utopian Tree	20	Solution.C#
Implementation	Viral Advertising	15	Solution.C#

Data-Structures

Subdomain	Challenge	Points	Solution
Arrays	Arrays - DS	10	Solution.C#
Arrays	2D Array - DS	15	Solution.C#
Arrays	Array Left Rotation	20	Solution.C#

SQL

Subdomain	Challenge	Points	Solution
Basic Select	Japanese Cities Names	10	Solution.SQL
Basic Select	Japanese Cities Attributes	10	Solution.SQL
Basic Select	Revising Select Query 1	10	Solution.SQL
Basic Select	Revising Select Query 2	10	Solution.SQL
Basic Select	Select All	10	Solution.SQL
Basic Select	Select by ID	10	Solution.SQL
Basic Select	Weather Observation Station 1	10	Solution.SQL
Basic Select	Weather Observation Station 2	10	Solution.SQL
Basic Select	Weather Observation Station 3	10	Solution.SQL
Basic Select	Weather Observation Station 4	10	Solution.SQL
Basic Select	Weather Observation Station 5	30	Solution.SQL
Basic Select	Weather Observation Station 6	10	Solution.SQL
Basic Select	Weather Observation Station 7	10	Solution.SQL
Basic Select	Weather Observation Station 8	15	Solution.SQL
Basic Select	Weather Observation Station 9	10	Solution.SQL
Basic Select	Weather Observation Station 10	10	Solution.SQL
Basic Select	Weather Observation Station 11	15	Solution.SQL
Basic Select	Weather Observation Station 12	15	Solution.SQL
Basic Select	Type of Triangle	20	Solution.SQL
Basic Select	More Than 75 Marks	15	Solution.SQL
Basic Select	Employee Salaries	10	Solution.SQL
Basic Select	Employee Names	10	Solution.SQL
Aggregation	Revising Aggregations - Averages	10	Solution.SQL
Aggregation	Average Population	10	Solution.SQL
Advanced Select	The PADS	10	Solution.SQL

Interview-Prepartion-Kit

Subdomain	Challenge	Points	Solution
Warm Up	Sock Merchant	10	Solution.C#
Warm Up	Counting Valleys	15	Solution.C#
Warm Up	Jumping on the Clouds	20	Solution.C#
Warm Up	Repeated String	20	Solution.C#
Arrays	Array Left Rotation	20	Solution.C#