Cody

# Problems

1 – 50 of 81
 Problem Title Likes Solvers Difficulty

#### Problem 26. Determine if input is odd

Created by: Cody Team

108

20469

#### Problem 5. Triangle Numbers

Created by: Cody Team

Tags math, triangle, nice

98

19990

#### Problem 6. Select every other element of a vector

Created by: Cody Team

130

23432

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

Created by: Cody Team

58

13854

#### Problem 76. De-dupe

Created by: Cody Team

Tags matlab

10

2025

#### Problem 35. Quote Doubler

Created by: Cody Team

8

2049

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

Created by: Cody Team

22

4629

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

Created by: Cody Team

Tags easy, matrices

40

7348

#### Problem 33. Create times-tables

Created by: Cody Team

Tags matrices

78

11581

#### Problem 41. Cell joiner

Created by: Cody Team

Tags strings, matlab

27

3739

#### Problem 19. Swap the first and last columns

Created by: Cody Team

75

14420

#### Problem 32. Most nonzero elements in row

Created by: Cody Team

Tags matrices

34

6224

#### Problem 12. Fibonacci sequence

Created by: Cody Team

89

10752

#### Problem 20. Summing digits

Created by: Cody Team

Tags strings, sum

32

6228

#### Problem 72. Interpolator

Created by: Cody Team

26

2503

#### Problem 62. Elapsed Time

Created by: Cody Team

Tags time

13

1976

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

Created by: Cody Team

Tags 3n+1, sample

71

6713

#### Problem 22. Remove the vowels

Created by: Cody Team

Tags regexp, siam

22

4983

#### Problem 50. QWERTY coordinates

Created by: Cody Team

Tags indexing

14

1555

#### Problem 66. Find the two-word state names

Created by: Cody Team

Tags regexp, states

3

868

#### Problem 9. Who Has the Most Change?

Created by: Cody Team

69

7336

#### Problem 10. Determine whether a vector is monotonically increasing

Created by: Cody Team

91

14017

#### Problem 25. Remove any row in which a NaN appears

Created by: Cody Team

67

7298

#### Problem 44. Trimming Spaces

Created by: Cody Team

8

1614

#### Problem 40. Reverse Run-Length Encoder

Created by: Cody Team

Tags encoding

13

1787

#### Problem 87. Indexed Probability Table

Created by: Cody Team

Tags matlab

6

1545

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

Created by: Cody Team

Tags matlab

15

2224

#### Problem 42. Find the alphabetic word product

Created by: Cody Team

Tags matlab

9

2519

#### Problem 77. Clean the List of Names

Created by: Cody Team

Tags strings

2

997

#### Problem 28. Counting Money

Created by: Cody Team

Tags regexp, strings

12

2675

#### Problem 57. Summing Digits within Text

Created by: Cody Team

Tags strings

8

1561

#### Problem 39. Which values occur exactly three times?

Created by: Cody Team

Tags search

19

4151

#### Problem 46. Which doors are open?

Created by: Cody Team

23

2409

#### Problem 94. Target sorting

Created by: Cody Team

Tags sorting, matlab

25

3622

#### Problem 4. Make a checkerboard matrix

Created by: Cody Team

177

13467

#### Problem 80. Test for balanced parentheses

Created by: Cody Team

Tags regexp, parens

8

944

#### Problem 60. The Goldbach Conjecture

Created by: Cody Team

Tags primes

54

4307

#### Problem 49. Sums with Excluded Digits

Created by: Cody Team

Tags strings

11

1414

#### Problem 74. Balanced number

Created by: Cody Team

Tags matlab

18

2116

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

Created by: Cody Team

Tags matlab

2

817

#### Problem 64. The Goldbach Conjecture, Part 2

Created by: Cody Team

Tags primes

14

1520

#### Problem 53. Duplicates

Created by: Cody Team

4

1411

#### Problem 86. Renaming a field in a structure array

Created by: Cody Team

Tags matlab

7

865

#### Problem 51. Find the two most distant points

Created by: Cody Team

Tags distance

7

1878

#### Problem 27. Pangrams!

Created by: Cody Team

Tags strings

29

2799

#### Problem 37. Pascal's Triangle

Created by: Cody Team

20

3250

#### Problem 45. Make a Palindrome Number

Created by: Cody Team

Tags strings

18

1593

#### Problem 54. Maximum running product for a string of numbers

Created by: Cody Team

5

1325

#### Problem 47. Extract leading non-zero digit

Created by: Cody Team

4

1367

#### Problem 82. Remove the small words from a list of words.

Created by: Cody Team

Tags matlab

3

821

1 – 50 of 81