Problems

1 – 50 of 77

Problem Title Likes Solvers Difficulty

Problem 5. Triangle Numbers

Created by: Cody Team

Tags math, triangle, nice

114

22720

Problem 26. Determine if input is odd

Created by: Cody Team

Tags easy, basic matlab, why matlab

115

21338

Problem 6. Select every other element of a vector

Created by: Cody Team

Tags vectors, matlab 101, indexing

161

26944

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

14464

Problem 76. De-dupe

Created by: Cody Team

Tags matlab

2393

Problem 35. Quote Doubler

Created by: Cody Team

Tags regexp, strings, quotes

2343

Problem 41. Cell joiner

Created by: Cody Team

Tags strings, matlab

4485

Problem 33. Create times-tables

Created by: Cody Team

Tags matrices

13511

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

Created by: Cody Team

Tags easy, matrices

7899

Problem 19. Swap the first and last columns

Created by: Cody Team

Tags math, matlab 101, permutations

16494

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

Created by: Cody Team

Tags sorting, basic matlab

4987

Problem 20. Summing digits

Created by: Cody Team

Tags strings, sum

6754

Problem 12. Fibonacci sequence

Created by: Cody Team

Tags sequences, fibonacci, siam

11713

Problem 32. Most nonzero elements in row

Created by: Cody Team

Tags matrices

6603

Problem 72. Interpolator

Created by: Cody Team

Tags interpolation

3106

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

Created by: Cody Team

Tags 3n+1, sample

7231

Problem 10. Determine whether a vector is monotonically increasing

Created by: Cody Team

Tags vectors, matlab 101

114

16276

Problem 9. Who Has the Most Change?

Created by: Cody Team

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

7956

Problem 22. Remove the vowels

Created by: Cody Team

Tags regexp, siam

5485

Problem 25. Remove any row in which a NaN appears

Created by: Cody Team

Tags matlab 101, siam

7775

Problem 4. Make a checkerboard matrix

Created by: Cody Team

Tags matrices, square

190

14445

Problem 66. Find the two-word state names

Created by: Cody Team

Tags regexp, states

1010

Problem 62. Elapsed Time

Created by: Cody Team

Tags time

2324

Problem 40. Reverse Run-Length Encoder

Created by: Cody Team

Tags encoding

2077

Problem 39. Which values occur exactly three times?

Created by: Cody Team

Tags search

4486

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

Created by: Cody Team

Tags matlab

2510

Problem 42. Find the alphabetic word product

Created by: Cody Team

Tags matlab

2795

Problem 87. Indexed Probability Table

Created by: Cody Team

Tags matlab

1826

Problem 44. Trimming Spaces

Created by: Cody Team

Tags strings, whitespace

1895

Problem 28. Counting Money

Created by: Cody Team

Tags regexp, strings

2995

Problem 57. Summing Digits within Text

Created by: Cody Team

Tags strings

1936

Problem 94. Target sorting

Created by: Cody Team

Tags sorting, matlab

3934

Problem 50. QWERTY coordinates

Created by: Cody Team

Tags indexing

1962

Problem 46. Which doors are open?

Created by: Cody Team

Tags matlab, iteration

2696

Problem 49. Sums with Excluded Digits

Created by: Cody Team

Tags strings

1708

Problem 77. Clean the List of Names

Created by: Cody Team

Tags strings

1263

Problem 60. The Goldbach Conjecture

Created by: Cody Team

Tags primes

4708

Problem 37. Pascal's Triangle

Created by: Cody Team

Tags math, combinatorics

3565

Problem 23. Finding Perfect Squares

Created by: Cody Team

Tags sets

139

14435

Problem 13. Remove all the consonants

Created by: Cody Team

Tags regexp, basics

3664

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

Created by: Cody Team

Tags vectors

4558

Problem 27. Pangrams!

Created by: Cody Team

Tags strings

3156

Problem 80. Test for balanced parentheses

Created by: Cody Team

Tags regexp, parens

1060

Problem 53. Duplicates

Created by: Cody Team

Tags strings, sets, matlab

1738

Problem 74. Balanced number

Created by: Cody Team

Tags matlab

2429

Problem 51. Find the two most distant points

Created by: Cody Team

Tags distance

2216

Problem 47. Extract leading non-zero digit

Created by: Cody Team

Tags math, maths, mathematics

1637

Problem 85. Remove the polynomials that have positive real elements of their roots.

Created by: Cody Team

Tags matlab

1151

Problem 48. Making change

Created by: Cody Team

Tags money, subs

2784

Problem 64. The Goldbach Conjecture, Part 2

Created by: Cody Team

Tags primes

1835

1 – 50 of 77

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