Cody

Problems

1 – 50 of 4,547
Problem Title
Likes
Solvers
Difficulty

Problem 47879. Create co-occurrence matrix

Created by: Mehmet OZC

Tags matrix manipulation, market basket, co-occurrence matrix

2

8

Problem 1120. Visualization of experimental data across a surface

Created by: Carl

Tags matrix, data

1

28

Problem 1155. Find the solution of algebraic equation

Created by: HARISANKAR PS

Tags solve equation

1

39

Problem 1161. Binpack Contest: Retro

Created by: Richard Zapor

Tags optimization, contest, cumsum

0

9

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

Created by: Joseph Kirk

Tags graph theory, cycles, undirected graphs

0

9

Problem 1212. Mann-Kendall Correlation

Created by: Khaled Hamed

Tags mann-kendall

1

21

Problem 1216. Mean ignoring NaNs

Created by: Tim

Tags average, mean, nan

2

32

Problem 1280. Elastic Collision 001: 1-D

Created by: Richard Zapor

Tags physics, ke, momentum

2

37

Problem 1339. Travelling Salesman Problem (TSP)

Created by: Alex P.

Tags games, travelling salesman

0

17

Problem 1360. Special Relativity 101.

Created by: Claudio Gelmi

Tags physics, relativity

0

74

Problem 1382. Schwarzschild radius

Created by: Claudio Gelmi

Tags black holes

1

33

Problem 1391. give-nth-decimal-place-of-pi up to 100 digits

Created by: Harish Maradana

Tags decimal of pi

1

50

Problem 1445. Number of vertices of a hypercube

Created by: Claudio Gelmi

Tags hypercube

1

65

Problem 1456. Beads on a Necklace (Convex Hulls)

Created by: Ned Gulley

Tags geometry

2

43

Problem 1484. Conjunctive Normal Form

Created by: G K

Tags math, logic

1

12

Problem 1490. Shifted Hexagonal Tiling Dots in a Circle

Created by: Yaroslav

Tags geometry, grid, hexagon

1

21

Problem 1496. Disjunctive Normal Form

Created by: G K

Tags math, logic

2

13

Problem 150. chirp again

Created by: AMITAVA BISWAS

Tags chirp

0

31

Problem 1509. Fast Fourier transform algorithm

Created by: Bob Levy

Tags algorithms

0

9

Problem 169. Set a Soroban Abacus

Created by: @bmtran (Bryant Tran)

Tags math, linear algebra, logic

2

31

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

Created by: Jean-Marie Sainthillier

Tags random, lottery, ><A HREF="https://bing.com">Sai</A>

5

12

Problem 1743. What? Paradox?

Created by: Frequency Domain

Tags hack, paradox

1

13

Problem 1745. Get me!

Created by: Frequency Domain

Tags hack

1

21

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!

1

17

Problem 1753. Calculate FFT

Created by: Frequency Domain

Tags fft

2

14

Problem 1761. Primes Faster for Large N

Created by: Richard Zapor

Tags primes, find, logical

1

28

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

Created by: Richard Zapor

Tags primes, logical, memory management

1

16

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

0

19

Problem 1854. Factorial: Unlimited Size : java.math

Created by: Richard Zapor

Tags factorial, java, bigdecimal

0

35

Problem 1856. Molecule Atomic Wt (CHONS) Molecules

Created by: Richard Zapor

Tags regexp, periodic table, atomic

5

39

Problem 1858. User defined nextpow function

Created by: Swapnali Gujar

Tags nextpow2, power

1

66

Problem 1862. Does this dress make me look fat

Created by: david hansen

Tags strings, strfind

1

39

Problem 1866. Usage of mkdir and copyfile

Created by: Richard Zapor

Tags mkdir, copyfile, pwd

1

14

Problem 1892. LIFO Validation

Created by: Paul Berglund

Tags lifo

1

10

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

Created by: Richard Zapor

Tags string, sequence, gjam

1

10

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

Created by: Richard Zapor

Tags string, sequence, gjam

2

8

Problem 1916. GJam 2013 Veterans: Hedge

Created by: Richard Zapor

Tags gjam, vector processing

1

17

Problem 1937. Get input and output variable names

Created by: Sky Sartorius

Tags regexp

1

13

Problem 1969. Self-Description

Created by: Alfonso Nieto-Castanon

Tags self-referential, xkcd

3

24

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

Created by: Richard Zapor

Tags life, lcm, conv2

2

10

Problem 1976. Kaggle: Reverse Game of Life - Create Isle prior State

Created by: Richard Zapor

Tags life, conv2, kaggle

2

11

Problem 1995. Loading/Expanding a ZIP file from File Exchange

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

Tags vector, dynamic regular expressions

0

20

Problem 2002. Schrödinger dog

Created by: J-G van der Toorn

Tags matlab, programming, fun

3

19

Problem 2010. Wrap a vector, but insert NaN's at the wrap-positions.

Created by: J-G van der Toorn

Tags vector, plot, nan

1

15

Problem 2029. Convert vector datasets to plot with imagesc instead of scatter

Created by: Ted

Tags scatter, grid, imagesc

1

3

Problem 2050. remove nans fast

Created by: Ted

Tags nan, speed optimization

1

31

Problem 2052. provide the numerical answer to these number questions...

Created by: Ted

Tags math, puzzle

2

46
1 – 50 of 4,547