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Find the peak 3n+1 sequence value
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

10 years ago

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Find relatively common elements in matrix rows
You want to find all elements that exist in greater than 50% of the rows in the matrix. For example, given A = 1 2 3 5 ...

10 years ago

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Counting in Finnish
Sort a vector of single digit whole numbers alphabetically by their name, in Finnish. See the Wikipedia page for <http://en.wik...

10 years ago

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Alphabetize by last name
Given a list of names in a cell array, sort the list by the last name. So if list = {'Barney Google','Snuffy Smith','Dagwood ...

10 years ago

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Clean the List of Names
Given a list of names in a cell array, remove any duplications that result from different capitalizations of the same string. So...

10 years ago

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Renaming a field in a structure array
MATLAB has a <http://www.mathworks.com/help/techdoc/ref/setfield.html setfield> and a <http://www.mathworks.com/help/techdoc/ref...

10 years ago

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Find common elements in matrix rows
Given a matrix, find all elements that exist in every row. For example, given A = 1 2 3 5 9 2 5 9 3 2 5 9 ...

10 years ago

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Counting Sequence
Given a vector x, find the "counting sequence" y. A counting sequence is formed by "counting" the entries in a given sequence...

10 years ago

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Implement a ROT13 cipher
Replace each character in string s1 with the character that is shifted 13 positions from it (wrap back to the beginning if neces...

10 years ago

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Scrabble Scores
Given a word, determine its score in <http://en.wikipedia.org/wiki/Scrabble Scrabble>. The input string will always be provi...

10 years ago

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Interpolator
You have a two vectors, a and b. They are monotonic and the same length. Given a value, va, where va is between a(1) and a(end...

10 years ago

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Test for balanced parentheses
Given the input inStr, give the boolean output out indicating whether all the parentheses are balanced. Examples: * If ...

10 years ago

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Maximum running product for a string of numbers
Given a string s representing a list of numbers, find the five consecutive numbers that multiply to form the largest number. Spe...

10 years ago

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Duplicates
Write a function that accepts a cell array of strings and returns another cell array of strings *with only the duplicates* retai...

10 years ago

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The Goldbach Conjecture, Part 2
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...

10 years ago

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Function Iterator
Given a handle fh to a function which takes a scalar input and returns a scalar output and an integer n >= 1, return a handle f...

10 years ago

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QWERTY coordinates
Given a lowercase letter or a digit as input, return the row where that letter appears on a <http://en.wikipedia.org/wiki/Keyboa...

10 years ago

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Indexed Probability Table
This question was inspired by a Stack Overflow question forwarded to me by Matt Simoneau. Given a vector x, make an indexed pro...

10 years ago

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Find the two most distant points
Given a collection of points, return the indices of the rows that contain the two points most distant from one another. The inpu...

10 years ago

Answered
"Standalone Named User” license question
Speak to Mathworks support regarding the standalone named user license. They can convert it to a network named user license, whi...

10 years ago | 1

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Answered
How to plot/use numerous values in single cell?
Brian, This example should be a good starting point. % Setting up some test data x = rand(40,3); data = cell(3,800...

10 years ago | 0

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Answered
How do I make a MATLAB created table properly appear in EXCEL?
Brad, Each row of Make is a collection of strings that cannot be concatenated automagically. You can concatenate the strin...

10 years ago | 1

| accepted

Answered
How to save table in workspace as txt/.m file in matlab ?
You can use *writetable* to write to a text file. writetable(data,'outputfile.txt'); If you really need this to be a .m ...

10 years ago | 0

Answered
Fastest Way of Opening and Reading .csv Files (Currently using xlsread)
Thankfully, you don't need to interact with Excel to read csv files. You can use <http://www.mathworks.com/help/matlab/ref/texts...

10 years ago | 2

| accepted

Answered
Interleaving columns of two cell arrays
Here's a function I wrote for you. It contains a subfunction to create the interleaving index. Save this to interleaveCells.m an...

10 years ago | 0

| accepted

Answered
modify all vectors in workspace
Joel, I will preface this by saying you really shouldn't have variables floating around your workspace without knowing their ...

10 years ago | 0

Answered
Different correlation results using matrix with NaN values
Falco, The documentation for corrcoef indicates that 'complete' is the 'rows' value corresponding to your first calculation. ...

10 years ago | 0

Answered
write cell array of strings in text file
filePh = fopen('features.txt','w'); fprintf(filePh,'%s\n',Strings{:}); fclose(filePh);

10 years ago | 8

| accepted

Answered
save cell array of strings and doubles to excel file
You can write cells directly to the file. If you're using xlswrite, you should specify a target file with an .xls or .xlsx exten...

10 years ago | 3

| accepted

Solved

Remove all the words that end with "ain"
Given the string s1, return the string s2 with the target characters removed. For example, given s1 = 'the main event' your ...

10 years ago