Cody

Problems

1 – 50 of 76
Problem Title
Likes
Solvers
Difficulty

Problem 5. Triangle Numbers

Created by: Cody Team

Tags math, triangle, nice

107

21434

Problem 26. Determine if input is odd

Created by: Cody Team

Tags easy, basic matlab, why matlab

114

20972

Problem 6. Select every other element of a vector

Created by: Cody Team

Tags vectors, matlab 101, indexing

143

25132

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

61

14190

Problem 76. De-dupe

Created by: Cody Team

Tags matlab

11

2239

Problem 35. Quote Doubler

Created by: Cody Team

Tags regexp, strings, quotes

9

2236

Problem 33. Create times-tables

Created by: Cody Team

Tags matrices

83

12616

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

Created by: Cody Team

Tags easy, matrices

42

7665

Problem 41. Cell joiner

Created by: Cody Team

Tags strings, matlab

28

4192

Problem 19. Swap the first and last columns

Created by: Cody Team

Tags math, matlab 101, permutations

83

15525

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

Created by: Cody Team

Tags sorting, basic matlab

23

4839

Problem 12. Fibonacci sequence

Created by: Cody Team

Tags sequences, fibonacci, siam

93

11332

Problem 20. Summing digits

Created by: Cody Team

Tags strings, sum

32

6511

Problem 32. Most nonzero elements in row

Created by: Cody Team

Tags matrices

36

6430

Problem 72. Interpolator

Created by: Cody Team

Tags interpolation

32

2875

Problem 9. Who Has the Most Change?

Created by: Cody Team

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

70

7669

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

Created by: Cody Team

Tags 3n+1, sample

73

6991

Problem 10. Determine whether a vector is monotonically increasing

Created by: Cody Team

Tags vectors, matlab 101

105

15241

Problem 25. Remove any row in which a NaN appears

Created by: Cody Team

Tags matlab 101, siam

70

7580

Problem 22. Remove the vowels

Created by: Cody Team

Tags regexp, siam

23

5303

Problem 4. Make a checkerboard matrix

Created by: Cody Team

Tags matrices, square

183

13957

Problem 62. Elapsed Time

Created by: Cody Team

Tags time

14

2207

Problem 66. Find the two-word state names

Created by: Cody Team

Tags regexp, states

5

957

Problem 39. Which values occur exactly three times?

Created by: Cody Team

Tags search

20

4356

Problem 40. Reverse Run-Length Encoder

Created by: Cody Team

Tags encoding

15

1972

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

Created by: Cody Team

Tags matlab

16

2410

Problem 44. Trimming Spaces

Created by: Cody Team

Tags strings, whitespace

9

1803

Problem 28. Counting Money

Created by: Cody Team

Tags regexp, strings

14

2878

Problem 50. QWERTY coordinates

Created by: Cody Team

Tags indexing

18

1826

Problem 42. Find the alphabetic word product

Created by: Cody Team

Tags matlab

10

2703

Problem 87. Indexed Probability Table

Created by: Cody Team

Tags matlab

7

1736

Problem 57. Summing Digits within Text

Created by: Cody Team

Tags strings

10

1829

Problem 94. Target sorting

Created by: Cody Team

Tags sorting, matlab

26

3813

Problem 46. Which doors are open?

Created by: Cody Team

Tags matlab, iteration

24

2601

Problem 60. The Goldbach Conjecture

Created by: Cody Team

Tags primes

55

4582

Problem 49. Sums with Excluded Digits

Created by: Cody Team

Tags strings

12

1608

Problem 77. Clean the List of Names

Created by: Cody Team

Tags strings

3

1181

Problem 13. Remove all the consonants

Created by: Cody Team

Tags regexp, basics

23

3506

Problem 23. Finding Perfect Squares

Created by: Cody Team

Tags sets

120

13256

Problem 37. Pascal's Triangle

Created by: Cody Team

Tags math, combinatorics

21

3450

Problem 27. Pangrams!

Created by: Cody Team

Tags strings

31

3016

Problem 53. Duplicates

Created by: Cody Team

Tags strings, sets, matlab

5

1630

Problem 74. Balanced number

Created by: Cody Team

Tags matlab

19

2324

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

Created by: Cody Team

Tags vectors

25

4370

Problem 80. Test for balanced parentheses

Created by: Cody Team

Tags regexp, parens

9

1008

Problem 47. Extract leading non-zero digit

Created by: Cody Team

Tags math, maths, mathematics

5

1556

Problem 51. Find the two most distant points

Created by: Cody Team

Tags distance

8

2093

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

Created by: Cody Team

Tags matlab

3

1042

Problem 48. Making change

Created by: Cody Team

Tags money, subs

15

2691

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

Created by: Cody Team

Tags regexp, diff, strings

65

4528
1 – 50 of 76