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
Read a column of numbers and interpolate missing data Created by: Cody Team Tags data cleaning	8	665
Interpolator Created by: Cody Team Tags interpolation	7	1231
Read a column of numbers and interpolate missing data Created by: Cody Team Tags data cleaning	8	665
Alphabetize by last name Created by: Cody Team Tags regexp, sorting	7	737
Find the peak 3n+1 sequence value Created by: Cody Team Tags 3n+1	9	720
Kaprekar Steps Created by: Cody Team Tags matlab, lookup table, poor_problem_statement	17	692
Find common elements in matrix rows Created by: Cody Team Tags matlab	8	745
Find the two-word state names Created by: Cody Team Tags states, regexp	2	527
Word Counting and Indexing Created by: Cody Team Tags strings, poor_test_suite	5	387
The Goldbach Conjecture, Part 2 Created by: Cody Team Tags primes	11	915
Encode Roman Numerals Created by: Cody Team Tags encoding, lookup table	1	491
Elapsed Time Created by: Cody Team Tags time	10	1357
Find state names that end with the letter A Created by: Cody Team Tags regexp, states	5	522
The Goldbach Conjecture Created by: Cody Team Tags primes	46	3192
Pattern matching Created by: Cody Team Tags indexing	10	1067
Tic Tac Toe FTW Created by: Cody Team Tags game, tic tac toe, fun	13	514
Summing Digits within Text Created by: Cody Team Tags strings	5	1013
Scrabble Scores Created by: Cody Team Tags strings, scrabble	7	690
Counting Sequence Created by: Cody Team Tags encoding	8	608
Maximum running product for a string of numbers Created by: Cody Team Tags matlab, sequences, poor_test_suite	5	776
Duplicates Created by: Cody Team Tags matlab, strings, sets	3	816
What is the next step in Conway's Life? Created by: Cody Team Tags life, automata	18	403
Find the two most distant points Created by: Cody Team Tags distance	4	1175
QWERTY coordinates Created by: Cody Team Tags indexing	4	932
Knight's Tour Checker Created by: Cody Team Tags matlab	11	345
Given two strings, find the maximum overlap Created by: Cody Team Tags matlab	8	288
Target sorting Created by: Cody Team Tags matlab, sorting	21	2857
Calculate the Levenshtein distance between two strings Created by: Cody Team Tags matlab, string metric	7	290
Find state names that start with the letter N Created by: Cody Team Tags regexp, states	1	443
Get the area codes from a list of phone numbers Created by: Cody Team Tags regexp	0	399
Connect Four Win Checker Created by: Cody Team Tags matlab, game	12	319
Counting in Finnish Created by: Cody Team Tags strings, finnish	6	507
It dseon't mettar waht oedrr the lrettes in a wrod are. Created by: Cody Team Tags strings, regexp	7	477
Indexed Probability Table Created by: Cody Team Tags matlab	3	1006
Renaming a field in a structure array Created by: Cody Team Tags matlab	5	523
Remove the polynomials that have positive real elements of their roots. Created by: Cody Team Tags matlab	1	431
Longest Divisor Run Created by: Cody Team Tags matlab	6	325
Prime factor digits Created by: Cody Team Tags primes, poor_test_suite	10	516
Remove the small words from a list of words. Created by: Cody Team Tags matlab	4	454
Mandelbrot Numbers Created by: Cody Team Tags matlab, fractals	4	399
Test for balanced parentheses Created by: Cody Team Tags parens, regexp	10	709
DNA N-Gram Distribution Created by: Cody Team Tags matlab	3	382
Implement a ROT13 cipher Created by: Cody Team Tags matlab, lookup table, cipher	7	632
Clean the List of Names Created by: Cody Team Tags strings	1	594
De-dupe Created by: Cody Team Tags matlab	8	1468
Find the palindrome Created by: Cody Team Tags strings	4	450
Balanced number Created by: Cody Team Tags matlab	16	1539
Replace NaNs with the number that appears to its left in the row. Created by: Cody Team Tags matlab	11	1652
Remove any row in which a NaN appears Created by: Cody Team Tags matlab 101, siam	51	5787
Function Iterator Created by: Cody Team Tags anonymous functions, function handles, nested functions	50	822
Finding Perfect Squares Created by: Cody Team Tags sets, poor_test_suite	44	6808
Remove the vowels Created by: Cody Team Tags regexp, siam	12	3756
Return the 3n+1 sequence for n Created by: Cody Team Tags 3n+1, sample	53	5001
Summing digits Created by: Cody Team Tags strings	22	4662
Swap the first and last columns Created by: Cody Team Tags matlab 101, siam, math	32	9381
Bullseye Matrix Created by: Cody Team Tags matrices	61	3288
Find all elements less than 0 or greater than 10 and replace them with NaN Created by: Cody Team Tags data cleaning, basic matlab	36	11166
Return the largest number that is adjacent to a zero Created by: Cody Team Tags vectors	16	2980
Find the longest sequence of 1's in a binary sequence. Created by: Cody Team Tags diff, strings, regexp	30	2312
Find the numeric mean of the prime numbers in a matrix. Created by: Cody Team Tags easy, matrices	26	5710
Remove all the consonants Created by: Cody Team Tags regexp, basics	7	2413
Fibonacci sequence Created by: Cody Team Tags sequences, siam, fibonacci	56	8004
Determine whether a vector is monotonically increasing Created by: Cody Team Tags vectors, matlab 101	45	8785
Who Has the Most Change? Created by: Cody Team Tags indexing, notice the rignt sequence of money!, poor description	47	5421
Add two numbers Created by: Cody Team Tags matlab 101, siam, basic matlab	58	21530
Select every other element of a vector Created by: Cody Team Tags vectors, indexing, matlab 101	61	15351
Triangle Numbers Created by: Cody Team Tags math, triangle	50	13372
Make a checkerboard matrix Created by: Cody Team Tags matrices, square	144	10216
Find the sum of all the numbers of the input vector Created by: Cody Team Tags easy, matlab 101, vector	53	24063
Make the vector [1 2 3 4 5 6 7 8 9 10] Created by: Cody Team Tags basic, colon, x=1:10	81	27820
Times 2 - START HERE Created by: Cody Team Tags intro, math, basics	115	33744
Sums with Excluded Digits Created by: Cody Team Tags strings	9	951
Making change Created by: Cody Team Tags money	12	1558
Extract leading non-zero digit Created by: Cody Team Tags math, maths, mathematics	1	937
Which doors are open? Created by: Cody Team Tags matlab, iteration	18	1719
Make a Palindrome Number Created by: Cody Team Tags strings	9	1098
Trimming Spaces Created by: Cody Team Tags strings, whitespace	5	1133
Subset Sum Created by: Cody Team Tags matlab	17	705
Find the alphabetic word product Created by: Cody Team Tags matlab	6	1953
Cell joiner Created by: Cody Team Tags matlab, strings	10	2164
Reverse Run-Length Encoder Created by: Cody Team Tags encoding	9	1269
Which values occur exactly three times? Created by: Cody Team Tags search	14	3214
Return a list sorted by number of occurrences Created by: Cody Team Tags vectors, sorting	10	1183
Pascal's Triangle Created by: Cody Team Tags combinatorics, math	13	2433
Find relatively common elements in matrix rows Created by: Cody Team Tags matlab	4	614
Quote Doubler Created by: Cody Team Tags strings, regexp, quotes	5	1495
Binary numbers Created by: Cody Team Tags matlab	17	1841
Create times-tables Created by: Cody Team Tags matrices	42	7277
Most nonzero elements in row Created by: Cody Team Tags matrices	27	5021
Remove all the words that end with "ain" Created by: Cody Team Tags regexp, strings, matlab 101	11	985
Sort a list of complex numbers based on far they are from the origin. Created by: Cody Team Tags sorting, basic matlab	16	3676
Nearest Numbers Created by: Cody Team Tags vectors, distance	24	2640
Counting Money Created by: Cody Team Tags regexp, strings	7	1859
Pangrams! Created by: Cody Team Tags strings	20	1891
Determine if input is odd Created by: Cody Team Tags easy, basic matlab, why matlab	83	16470

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