Pengfei Liu

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1 – 50 of 98

Problem 659. How long is the longest prime diagonal?

Created by: Ned Gulley

Tags primes, spiral, diagonal

1

Solution

105

Size

1

Solution

105

Size

Problem 661. Spot the outlier

Created by: Ned Gulley

Tags asee, lines, points

2

Solutions

87

Size

2

Solutions

87

Size

Problem 658. Find the biggest empty box

Created by: Ned Gulley

Tags asee

1

Solution

120

Size

1

Solution

120

Size

Problem 323. Mechanics 1

Created by: Matt Fig

Tags mechanics

8

Solutions

110

Size

8

Solutions

110

Size

Problem 26. Determine if input is odd

Created by: Cody Team

Tags easy, basic matlab, why matlab

1

Solution

27

Size

1

Solution

27

Size

Problem 27. Pangrams!

Created by: Cody Team

Tags strings

1

Solution

43

Size

1

Solution

43

Size

Problem 28. Counting Money

Created by: Cody Team

Tags regexp, strings

1

Solution

42

Size

1

Solution

42

Size

Problem 29. Nearest Numbers

Created by: Cody Team

Tags vectors, distance

2

Solutions

72

Size

2

Solutions

72

Size

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

Created by: Cody Team

Tags sorting, basic matlab

1

Solution

24

Size

1

Solution

24

Size

Problem 31. Remove all the words that end with "ain"

Created by: Cody Team

Tags matlab 101, regexp, strings

1

Solution

19

Size

1

Solution

19

Size

Problem 32. Most nonzero elements in row

Created by: Cody Team

Tags matrices

1

Solution

58

Size

1

Solution

58

Size

Problem 33. Create times-tables

Created by: Cody Team

Tags matrices

2

Solutions

30

Size

2

Solutions

30

Size

Problem 34. Binary numbers

Created by: Cody Team

Tags matlab

1

Solution

89

Size

1

Solution

89

Size

Problem 35. Quote Doubler

Created by: Cody Team

Tags regexp, strings, quotes

13

Solutions

20

Size

13

Solutions

20

Size

Problem 37. Pascal's Triangle

Created by: Cody Team

Tags math, combinatorics

3

Solutions

51

Size

3

Solutions

51

Size

Problem 38. Return a list sorted by number of occurrences

Created by: Cody Team

Tags vectors, sorting

1

Solution

80

Size

1

Solution

80

Size

Problem 39. Which values occur exactly three times?

Created by: Cody Team

Tags search

1

Solution

47

Size

1

Solution

47

Size

Problem 40. Reverse Run-Length Encoder

Created by: Cody Team

Tags encoding

1

Solution

52

Size

1

Solution

52

Size

Problem 41. Cell joiner

Created by: Cody Team

Tags strings, matlab

2

Solutions

14

Size

2

Solutions

14

Size

Problem 42. Find the alphabetic word product

Created by: Cody Team

Tags matlab

1

Solution

35

Size

1

Solution

35

Size

Problem 43. Subset Sum

Created by: Cody Team

Tags matlab

3

Solutions

91

Size

3

Solutions

91

Size

Problem 44. Trimming Spaces

Created by: Cody Team

Tags strings, whitespace

19

Solutions

51

Size

19

Solutions

51

Size

Problem 45. Make a Palindrome Number

Created by: Cody Team

Tags strings

1

Solution

51

Size

1

Solution

51

Size

Problem 46. Which doors are open?

Created by: Cody Team

Tags matlab, iteration

1

Solution

45

Size

1

Solution

45

Size

Problem 47. Extract leading non-zero digit

Created by: Cody Team

Tags math, maths, mathematics

1

Solution

58

Size

1

Solution

58

Size

Problem 48. Making change

Created by: Cody Team

Tags money, subs

5

Solutions

92

Size

5

Solutions

92

Size

Problem 49. Sums with Excluded Digits

Created by: Cody Team

Tags strings

1

Solution

48

Size

1

Solution

48

Size

Problem 1. Times 2 - START HERE

Created by: Cody Team

Tags intro, math, easy

1

Solution

12

Size

1

Solution

12

Size

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

Created by: Cody Team

Tags basic, test, basics

1

Solution

11

Size

1

Solution

11

Size

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

Created by: Cody Team

Tags matlab 101, easy, vector

1

Solution

12

Size

1

Solution

12

Size

Problem 4. Make a checkerboard matrix

Created by: Cody Team

Tags matrices, square

1

Solution

80

Size

1

Solution

80

Size

Problem 5. Triangle Numbers

Created by: Cody Team

Tags math, triangle, nice

1

Solution

14

Size

1

Solution

14

Size

Problem 8. Add two numbers

Created by: Cody Team

Tags matlab 101, basic matlab, basics

1

Solution

13

Size

1

Solution

13

Size

Problem 9. Who Has the Most Change?

Created by: Cody Team

Tags indexing, stupid, notice the rignt sequence of money!

4

Solutions

35

Size

4

Solutions

35

Size

Problem 12. Fibonacci sequence

Created by: Cody Team

Tags sequences, fibonacci, siam

1

Solution

40

Size

1

Solution

40

Size

Problem 13. Remove all the consonants

Created by: Cody Team

Tags regexp, basics

3

Solutions

82

Size

3

Solutions

82

Size

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

Created by: Cody Team

Tags easy, matrices

1

Solution

57

Size

1

Solution

57

Size

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

Created by: Cody Team

Tags regexp, diff, strings

1

Solution

47

Size

1

Solution

47

Size

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

Created by: Cody Team

Tags vectors

3

Solutions

83

Size

3

Solutions

83

Size

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

1

Solution

38

Size

1

Solution

38

Size

Problem 18. Bullseye Matrix

Created by: Cody Team

Tags matrices

1

Solution

102

Size

1

Solution

102

Size

Problem 19. Swap the first and last columns

Created by: Cody Team

Tags math, matlab 101, permutations

3

Solutions

32

Size

3

Solutions

32

Size

Problem 20. Summing digits

Created by: Cody Team

Tags strings, sum

1

Solution

63

Size

1

Solution

63

Size

Problem 22. Remove the vowels

Created by: Cody Team

Tags regexp, siam

1

Solution

42

Size

1

Solution

42

Size

Problem 24. Function Iterator

Created by: Cody Team

Tags anonymous functions, function handles, nested functions

2

Solutions

59

Size

2

Solutions

59

Size

Problem 25. Remove any row in which a NaN appears

Created by: Cody Team

Tags matlab 101, siam

1

Solution

45

Size

1

Solution

45

Size

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

Created by: Cody Team

Tags matlab

1

Solution

51

Size

1

Solution

51

Size

Problem 74. Balanced number

Created by: Cody Team

Tags matlab

2

Solutions

152

Size

2

Solutions

152

Size

Problem 75. Find the palindrome

Created by: Cody Team

Tags strings

1

Solution

70

Size

1

Solution

70

Size

Problem 76. De-dupe

Created by: Cody Team

Tags matlab

2

Solutions

13

Size

2

Solutions

13

Size

1 – 50 of 98