# Problems

1 – 50 of 4,806
 Problem Title Likes Solvers Difficulty

#### Problem 1100. Design matrix from eigenvalues

Created by: Christoph

0

11

#### Problem 1170. Count the Number of Undirected Cycles in a Graph

Created by: Joseph Kirk

1

11

#### Problem 1339. Travelling Salesman Problem (TSP)

Created by: Alex P.

0

14

#### Problem 1490. Shifted Hexagonal Tiling Dots in a Circle

Created by: Yaroslav

1

21

#### Problem 2390. Fair Scoring for Cody

Created by: Nicholas Howe

Tags cody, mtree, scoring

1

6

#### Problem 2409. Find the Connecting Path

Created by: Nishat Savat

0

9

#### Problem 2424. Latest Question On Cody

Created by: rifat

1

23

Created by: goc3

1

24

#### Problem 2448. Back to the future

Created by: Óscar

Tags reflection

2

12

#### Problem 2449. Back to the future II

Created by: Óscar

Tags reflection

0

11

#### Problem 2450. Back to the Future III

Created by: Óscar

Tags reflection

1

10

#### Problem 2470. self description 2.0

Created by: rifat

Tags hack

0

13

#### Problem 2485. Initialize a varible with an integer value from a another variable which is assigned with a character value.

Created by: Peter Babu

0

13

#### Problem 255. Spiraling out of control....

Created by: Matt Fig

Tags math, spiral

1

8

#### Problem 2641. Dispatch and collect

Created by: Guillaume

1

13

#### Problem 2670. Error handling

Created by: Matthew Eicholtz

1

50

Created by: goc3

2

49

Created by: goc3

1

40

Created by: goc3

1

31

Created by: goc3

1

28

Created by: goc3

3

28

Created by: goc3

2

74

#### Problem 2901. How to get the additive inverse of a uint8.

Created by: Gregory

Tags uint8

0

63

#### Problem 294. A stroll on the beach: finding a route round a connected region

Created by: David Young

1

10

#### Problem 2954. Best Problem Elections

Created by: Jan Orwat

6

36

#### Problem 3004. Two functions (to be sure)

Created by: Jean-Marie Sainthillier

Tags deal, functions

4

15

#### Problem 3017. Baseball Pitch Question

Created by: Marc Reyes

3

74

#### Problem 3065. Cycling — Critical Power

Created by: goc3

Tags data, power, cycling

1

25

#### Problem 3082. Scrabble Scores - 10

Created by: goc3

Tags game, board, word

1

21

#### Problem 3100. Rumis Scorer 2

Created by: goc3

Tags game, 3d, board

1

29

#### Problem 1729. Can you beat the lottery again (for hardcore coder) ?

Created by: Jean-Marie Sainthillier

Tags random, lottery

7

12

Created by: Frequency Domain

1

14

#### Problem 1747. Get me! v3

Created by: Frequency Domain

Tags hack, get me!

4

17

#### Problem 1752. Get me! v4 (Cody hacking challenge)

Created by: Frequency Domain

Tags hack, get me!

2

17

#### Problem 1761. Primes Faster for Large N

Created by: Richard Zapor

1

34

#### Problem 1763. Primes for Large N: 2^30, System Memory Limit

Created by: Richard Zapor

1

17

#### Problem 1769. singularity 2.0 (easier)

Created by: Alfonso Nieto-Castanon

Tags hack

3

16

#### Problem 1846. Free Fall analytical solution (Chapra 2012 textbook Example 1.1)

Created by: Robert Canfield

Tags aoe2074

1

21

#### Problem 1854. Factorial: Unlimited Size : java.math

Created by: Richard Zapor

0

36

#### Problem 1866. Usage of mkdir and copyfile

Created by: Richard Zapor

Tags mkdir, copyfile, pwd

1

16

#### Problem 1875. GJam: 2013 China Event: Cannon Angle

Created by: Richard Zapor

Tags physics, gjam, roots

2

18

#### Problem 1901. GJam 2014 China Rd A: Read Phone Number

Created by: Richard Zapor

1

10

#### Problem 1902. GJam 2014 China Rd A: Read Phone Number (Large)

Created by: Richard Zapor

2

8

#### Problem 1916. GJam 2013 Veterans: Hedge

Created by: Richard Zapor

1

18

#### Problem 1937. Get input and output variable names

Created by: Sky Sartorius

Tags regexp

2

14

#### Problem 1975. Kaggle: Reverse Game of Life - Zoo of Stills and Oscillators

Created by: Richard Zapor

Tags life, lcm, conv2

3

12

Created by: Richard Zapor

Tags urlwrite, unzip

1

11

#### Problem 1999. Bleed non-zeros to the right using REGEXP, and that sort of cheatcodess...

Created by: J-G van der Toorn

0

22

Created by: Ted

2

4

Created by: Ted

Tags math

0

88

1 – 50 of 4,806