My solutions to HackerRank practice problems using C#

If you are interested in helping or have a different solution, feel free to make a pull request.

Problem Solving

• Warmup
• Implementation
• Strings
• Sorting
• Search
• Graph Theory
• Greedy
• Dynamic Programming
• Constructive Algorithms
• Bit Manipulation
• Recursion
• Game Theory
• NP Complete
• Debugging

Warmup

#	Title	Solution	Difficulty	Points
01	Solve Me First	C#	Easy	1
02	Simple Array Sum	C#	Easy	10
03	Compare the Triplets	C#	Easy	10
04	A Very Big Sum	C#	Easy	10
05	Diagonal Difference	C#	Easy	10
06	Plus Minus	C#	Easy	10
07	Staircase	C#	Easy	10
08	Mini-Max Sum	C#	Easy	10
09	Birthday Cake Candles	C#	Easy	10
10	Time Conversion	C#	Easy	15

Implementation

#	Title	Solution	Difficulty	Points
01	Grading Students	C#	Easy	10
02	Apple and Orange	C#	Easy	10
03	Number Line Jumps	C#	Easy	10
04	Between Two Sets	C#	Easy	10
05	Breaking the Records	C#	Easy	10
06	Subarray Division	C#	Easy	10
07	Divisible Sum Pairs	C#	Easy	10
08	Migratory Birds	C#	Easy	10
09	Day of the Programmer	C#	Easy	15
10	Bill Division	C#	Easy	10
11	Sales by Match	C#	Easy	10
12	Drawing Book	C#	Easy	10
13	Counting Valleys	C#	Easy	15
14	Electronics Shop	C#	Easy	15
15	Cats and a Mouse	C#	Easy	15
16	Forming a Magic Square	C#	Medium	20
17	Picking Numbers	C#	Easy	20
18	Climbing the Leaderboard	C#	Medium	20
19	The Hurdle Race	C#	Easy	15
20	Designer PDF Viewer	C#	Easy	20
21	Utopian Tree	C#	Easy	20
22	Angry Professor	C#	Easy	20
23	Beautiful Days at the Movies	C#	Easy	15
24	Viral Advertising	C#	Easy	15
25	Save the Prisoner!	C#	Easy	15
26	Circular Array Rotation	C#	Easy	20
27	Sequence Equation	C#	Easy	20
28	Jumping on the Clouds: Revisited	C#	Easy	15
29	Find Digits	C#	Easy	25
30	Extra Long Factorials	C#	Medium	20
31	Append and Delete	C#	Easy	20
32	Sherlock and Squares	C#	Easy	20
33	Library Fine	C#	Easy	15
34	Cut the sticks	C#	Easy	25
35	Non-Divisible Subset	C#	Medium	20
36	Repeated String	C#	Easy	20
37	Jumping on the Clouds	C#	Easy	20
38	Equalize the Array	C#	Easy	20
39	Queen's Attack II	C#	Medium	30
40	ACM ICPC Team	C#	Easy	25
41	Taum and B'day	C#	Easy	25
42	Organizing Containers of Balls	C#	Medium	30
43	Encryption	C#	Medium	30
44	Bigger is Greater	C#	Medium	35
45	Modified Kaprekar Numbers	C#	Easy	30
46	Beautiful Triplets	C#	Easy	20
47	Minimum Distances	C#	Easy	20
48	Halloween Sale	C#	Easy	20
49	The Time in Words	C#	Medium	25
50	Chocolate Feast	C#	Easy	25
51	Service Lane	C#	Easy	20
52	Lisa's Workbook	C#	Easy	25
53	Flatland Space Stations	C#	Easy	25
54	Fair Rations	C#	Easy	25
55	Cavity Map	C#	Easy	30
56	Manasa and Stones	C#	Easy	30
57	The Grid Search	C#	Medium	30
58	Happy Ladybugs	C#	Easy	30
59	Strange Counter	C#	Easy	30
60	3D Surface Area	C#	Medium	30