Problems

1 – 50 of 94

Problem Title Likes Solvers

Problem 1. Times 2 - START HERE

Created by: Cody Team

Tags intro, math, easy

359

58020

Problem 2. Make the vector [1 2 3 4 5 6 7 8 9 10]

Created by: Cody Team

Tags basic, basics, colon

137

36978

Problem 3. Find the sum of all the numbers of the input vector

Created by: Cody Team

Tags matlab 101, easy, vector

132

33401

Problem 8. Add two numbers

Created by: Cody Team

Tags matlab 101, basic matlab, basics

133

29176

Problem 6. Select every other element of a vector

Created by: Cody Team

Tags vectors, matlab 101, indexing

111

21430

Problem 26. Determine if input is odd

Created by: Cody Team

Tags easy, basic matlab, why matlab

104

19692

Problem 5. Triangle Numbers

Created by: Cody Team

Tags math, triangle, nice

18323

Problem 17. Find all elements less than 0 or greater than 10 and replace them with NaN

Created by: Cody Team

Tags data cleaning, basic matlab

13269

Problem 19. Swap the first and last columns

Created by: Cody Team

Tags math, matlab 101, permutations

13067

Problem 4. Make a checkerboard matrix

Created by: Cody Team

Tags matrices, square

169

12652

Problem 10. Determine whether a vector is monotonically increasing

Created by: Cody Team

Tags vectors, matlab 101

12583

Problem 23. Finding Perfect Squares

Created by: Cody Team

Tags sets, poor_test_suite

10506

Problem 33. Create times-tables

Created by: Cody Team

Tags matrices

10403

Problem 12. Fibonacci sequence

Created by: Cody Team

Tags sequences, fibonacci, siam

10100

Problem 25. Remove any row in which a NaN appears

Created by: Cody Team

Tags matlab 101, siam

6940

Problem 14. Find the numeric mean of the prime numbers in a matrix.

Created by: Cody Team

Tags easy, matrices

6907

Problem 9. Who Has the Most Change?

Created by: Cody Team

Tags indexing, notice the rignt sequence of money!, poor description

6852

Problem 21. Return the 3n+1 sequence for n

Created by: Cody Team

Tags 3n+1, sample

6296

Problem 32. Most nonzero elements in row

Created by: Cody Team

Tags matrices

5923

Problem 20. Summing digits

Created by: Cody Team

Tags strings, sum

5820

Problem 22. Remove the vowels

Created by: Cody Team

Tags regexp, siam

4669

Problem 30. Sort a list of complex numbers based on far they are from the origin.

Created by: Cody Team

Tags sorting, basic matlab

4389

Problem 18. Bullseye Matrix

Created by: Cody Team

Tags matrices

4190

Problem 60. The Goldbach Conjecture

Created by: Cody Team

Tags primes

3958

Problem 39. Which values occur exactly three times?

Created by: Cody Team

Tags search

3884

Problem 16. Return the largest number that is adjacent to a zero

Created by: Cody Team

Tags vectors

3830

Problem 15. Find the longest sequence of 1's in a binary sequence.

Created by: Cody Team

Tags regexp, diff, strings

3513

Problem 94. Target sorting

Created by: Cody Team

Tags sorting, matlab

3424

Problem 29. Nearest Numbers

Created by: Cody Team

Tags vectors, distance

3289

Problem 41. Cell joiner

Created by: Cody Team

Tags strings, matlab

3241

Problem 13. Remove all the consonants

Created by: Cody Team

Tags regexp, basics

3132

Problem 37. Pascal's Triangle

Created by: Cody Team

Tags math, combinatorics

3033

Problem 34. Binary numbers

Created by: Cody Team

Tags matlab

2565

Problem 27. Pangrams!

Created by: Cody Team

Tags strings

2550

Problem 28. Counting Money

Created by: Cody Team

Tags regexp, strings

2451

Problem 42. Find the alphabetic word product

Created by: Cody Team

Tags matlab

2354

Problem 48. Making change

Created by: Cody Team

Tags money

2239

Problem 46. Which doors are open?

Created by: Cody Team

Tags matlab, iteration

2218

Problem 72. Interpolator

Created by: Cody Team

Tags interpolation

2073

Problem 73. Replace NaNs with the number that appears to its left in the row.

Created by: Cody Team

Tags matlab

2057

Problem 74. Balanced number

Created by: Cody Team

Tags matlab

1940

Problem 35. Quote Doubler

Created by: Cody Team

Tags regexp, strings, quotes

1862

Problem 76. De-dupe

Created by: Cody Team

Tags matlab

1831

Problem 62. Elapsed Time

Created by: Cody Team

Tags time

1757

Problem 51. Find the two most distant points

Created by: Cody Team

Tags distance

1673

Problem 40. Reverse Run-Length Encoder

Created by: Cody Team

Tags encoding

1633

Problem 59. Pattern matching

Created by: Cody Team

Tags indexing

1629

Problem 38. Return a list sorted by number of occurrences

Created by: Cody Team

Tags vectors, sorting

1542

Problem 44. Trimming Spaces

Created by: Cody Team

Tags strings, whitespace

1447

Problem 45. Make a Palindrome Number

Created by: Cody Team

Tags strings

1434

1 – 50 of 94

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