Cody Challenge

Basic to advanced MATLAB problems created by the Cody Team at MathWorks.
A great starting place for new Cody players! 

Cody Challenge Master

+50 points

Problem Title	Likes	Solvers
Problem 72. Interpolator Created by: Cody Team Tags interpolation	9	2050
Problem 10. Determine whether a vector is monotonically increasing Created by: Cody Team Tags vectors, matlab 101	50	12047
Problem 71. Read a column of numbers and interpolate missing data Created by: Cody Team Tags data cleaning, average	13	1288
Problem 70. Alphabetize by last name Created by: Cody Team Tags regexp, sorting	8	1092
Problem 69. Find the peak 3n+1 sequence value Created by: Cody Team Tags 3n+1	9	1078
Problem 68. Kaprekar Steps Created by: Cody Team Tags matlab, lookup table, poor_problem_statement	15	1085
Problem 67. Find common elements in matrix rows Created by: Cody Team Tags matlab	9	1072
Problem 66. Find the two-word state names Created by: Cody Team Tags regexp, states	2	754
Problem 65. Word Counting and Indexing Created by: Cody Team Tags strings, poor_test_suite	4	605
Problem 64. The Goldbach Conjecture, Part 2 Created by: Cody Team Tags primes	12	1277
Problem 63. Encode Roman Numerals Created by: Cody Team Tags encoding, lookup table	0	725
Problem 62. Elapsed Time Created by: Cody Team Tags time	11	1786
Problem 61. Find state names that end with the letter A Created by: Cody Team Tags regexp, states	5	696
Problem 60. The Goldbach Conjecture Created by: Cody Team Tags primes	46	4584
Problem 59. Pattern matching Created by: Cody Team Tags indexing	8	1713
Problem 58. Tic Tac Toe FTW Created by: Cody Team Tags game, fun, tic tac toe	14	851
Problem 57. Summing Digits within Text Created by: Cody Team Tags strings	6	1332
Problem 56. Scrabble Scores Created by: Cody Team Tags strings, scrabble	6	1018
Problem 55. Counting Sequence Created by: Cody Team Tags encoding	9	903
Problem 54. Maximum running product for a string of numbers Created by: Cody Team Tags sequences, matlab, poor_test_suite	4	1159
Problem 53. Duplicates Created by: Cody Team Tags strings, sets, matlab	3	1077
Problem 52. What is the next step in Conway's Life? Created by: Cody Team Tags life, automata	17	686
Problem 51. Find the two most distant points Created by: Cody Team Tags distance	5	1671
Problem 50. QWERTY coordinates Created by: Cody Team Tags indexing	3	1284
Problem 96. Knight's Tour Checker Created by: Cody Team Tags matlab, chess	12	435
Problem 95. Given two strings, find the maximum overlap Created by: Cody Team Tags matlab	7	375
Problem 94. Target sorting Created by: Cody Team Tags sorting, matlab	20	3586
Problem 93. Calculate the Levenshtein distance between two strings Created by: Cody Team Tags matlab, string metric	10	362
Problem 92. Find state names that start with the letter N Created by: Cody Team Tags regexp, states	1	565
Problem 91. Get the area codes from a list of phone numbers Created by: Cody Team Tags regexp	1	501
Problem 90. Connect Four Win Checker Created by: Cody Team Tags matlab, game	12	541
Problem 89. Counting in Finnish Created by: Cody Team Tags strings, finnish	7	706
Problem 88. It dseon't mettar waht oedrr the lrettes in a wrod are. Created by: Cody Team Tags regexp, strings	7	545
Problem 87. Indexed Probability Table Created by: Cody Team Tags matlab	3	1414
Problem 86. Renaming a field in a structure array Created by: Cody Team Tags matlab	5	605
Problem 85. Remove the polynomials that have positive real elements of their roots. Created by: Cody Team Tags matlab	1	600
Problem 84. Longest Divisor Run Created by: Cody Team Tags matlab	4	393
Problem 83. Prime factor digits Created by: Cody Team Tags primes, poor_test_suite	12	655
Problem 82. Remove the small words from a list of words. Created by: Cody Team Tags matlab	3	617
Problem 81. Mandelbrot Numbers Created by: Cody Team Tags matlab, fractals	4	478
Problem 80. Test for balanced parentheses Created by: Cody Team Tags regexp, parens	8	949
Problem 79. DNA N-Gram Distribution Created by: Cody Team Tags matlab	3	459
Problem 78. Implement a ROT13 cipher Created by: Cody Team Tags matlab, encoding, cipher	6	869
Problem 77. Clean the List of Names Created by: Cody Team Tags strings	1	771
Problem 76. De-dupe Created by: Cody Team Tags matlab	7	1813
Problem 75. Find the palindrome Created by: Cody Team Tags strings	4	656
Problem 74. Balanced number Created by: Cody Team Tags matlab	14	2088
Problem 73. Replace NaNs with the number that appears to its left in the row. Created by: Cody Team Tags matlab	11	2136
Problem 25. Remove any row in which a NaN appears Created by: Cody Team Tags matlab 101, siam	54	7460
Problem 24. Function Iterator Created by: Cody Team Tags anonymous functions, function handles, nested functions	41	1210
Problem 23. Finding Perfect Squares Created by: Cody Team Tags sets, poor_test_suite	54	9770
Problem 22. Remove the vowels Created by: Cody Team Tags regexp, siam	14	4901
Problem 21. Return the 3n+1 sequence for n Created by: Cody Team Tags 3n+1, sample	52	6875
Problem 20. Summing digits Created by: Cody Team Tags strings	22	5972
Problem 19. Swap the first and last columns Created by: Cody Team Tags math, matlab 101, permutations	39	12533
Problem 18. Bullseye Matrix Created by: Cody Team Tags matrices	67	4637
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	38	15394
Problem 16. Return the largest number that is adjacent to a zero Created by: Cody Team Tags vectors	16	3965
Problem 15. Find the longest sequence of 1's in a binary sequence. Created by: Cody Team Tags regexp, diff, strings	34	3214
Problem 14. Find the numeric mean of the prime numbers in a matrix. Created by: Cody Team Tags easy, matrices	28	7225
Problem 13. Remove all the consonants Created by: Cody Team Tags regexp, basics	11	3182
Problem 12. Fibonacci sequence Created by: Cody Team Tags sequences, fibonacci, siam	58	11416
Problem 10. Determine whether a vector is monotonically increasing Created by: Cody Team Tags vectors, matlab 101	50	12047
Problem 9. Who Has the Most Change? Created by: Cody Team Tags indexing, notice the rignt sequence of money!, poor description	49	7598
Problem 8. Add two numbers Created by: Cody Team Tags matlab 101, basic matlab, basics	69	29772
Problem 6. Select every other element of a vector Created by: Cody Team Tags vectors, matlab 101, indexing	73	20968
Problem 5. Triangle Numbers Created by: Cody Team Tags math, triangle, nice	64	18754
Problem 4. Make a checkerboard matrix Created by: Cody Team Tags matrices, square	146	14918
Problem 3. Find the sum of all the numbers of the input vector Created by: Cody Team Tags matlab 101, easy, vector	69	33406
Problem 2. Make the vector [1 2 3 4 5 6 7 8 9 10] Created by: Cody Team Tags basic, basics, colon	90	42736
Problem 1. Times 2 - START HERE Created by: Cody Team Tags intro, math, easy	138	56791
Problem 49. Sums with Excluded Digits Created by: Cody Team Tags strings	9	1281
Problem 48. Making change Created by: Cody Team Tags money	12	2399
Problem 47. Extract leading non-zero digit Created by: Cody Team Tags math, maths, mathematics	1	1227
Problem 46. Which doors are open? Created by: Cody Team Tags matlab, iteration	18	2353
Problem 45. Make a Palindrome Number Created by: Cody Team Tags strings	10	1492
Problem 44. Trimming Spaces Created by: Cody Team Tags strings, whitespace	6	1448
Problem 43. Subset Sum Created by: Cody Team Tags matlab	14	990
Problem 42. Find the alphabetic word product Created by: Cody Team Tags matlab	6	2497
Problem 41. Cell joiner Created by: Cody Team Tags strings, matlab	11	2849
Problem 40. Reverse Run-Length Encoder Created by: Cody Team Tags encoding	8	1708
Problem 39. Which values occur exactly three times? Created by: Cody Team Tags search	13	4137
Problem 38. Return a list sorted by number of occurrences Created by: Cody Team Tags vectors, sorting	7	1534
Problem 37. Pascal's Triangle Created by: Cody Team Tags math, combinatorics	14	3149
Problem 36. Find relatively common elements in matrix rows Created by: Cody Team Tags matlab	4	860
Problem 35. Quote Doubler Created by: Cody Team Tags regexp, strings, quotes	6	1825
Problem 34. Binary numbers Created by: Cody Team Tags matlab	21	2479
Problem 33. Create times-tables Created by: Cody Team Tags matrices	41	10210
Problem 32. Most nonzero elements in row Created by: Cody Team Tags matrices	27	6438
Problem 31. Remove all the words that end with "ain" Created by: Cody Team Tags matlab 101, regexp, strings	14	1305
Problem 30. Sort a list of complex numbers based on far they are from the origin. Created by: Cody Team Tags sorting, basic matlab	17	4646
Problem 29. Nearest Numbers Created by: Cody Team Tags vectors, distance	27	3541
Problem 28. Counting Money Created by: Cody Team Tags regexp, strings	8	2485
Problem 27. Pangrams! Created by: Cody Team Tags strings	22	2595
Problem 26. Determine if input is odd Created by: Cody Team Tags easy, basic matlab, why matlab	90	23064

Recent Group Finishers214

Recent Activity

Shubhankar Poundrik submitted Solution 2446323 to Problem 53. Duplicates

1 hour and 48 minutes ago