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Allen


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382 total contributions since 2017

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Kryptos - CIA Cypher Sculpture: Vignere Decryption
The <http://en.wikipedia.org/wiki/Kryptos Kryptos Sculpture> contains four encypted messages. This Challenge is to Decrypt tw...

10 hours ago

Solved


Kryptos - CIA Cypher Sculpture: Vigenere Encryption
The <http://en.wikipedia.org/wiki/Kryptos Kryptos Sculpture> contains four encypted messages. This Challenge is to Encrypt tw...

10 hours ago

Solved


Mean and standard deviation of times in string
Input(t) - cell of strings with times in format 'min:sec.ms' Output([m, s]) - two strings with mean and standard deviation wi...

13 hours ago

Solved


Generate a melodic contour string matrix
<http://en.wikipedia.org/wiki/Parsons_code Parsons code> is a surprisingly effective way to identify music by its melodic motion...

13 hours ago

Solved


Make a list string
Given a cell string, produce a string separating the items with spaces and commas and with an 'and' preceding the final item, an...

14 hours ago

Solved


Backslang, odds are you used it at some point in time...
So backslang is a language that can be used to communicate in an easy decode code, if people know the rules of decoding it. Wel...

14 hours ago

Solved


NO _________ ALLOWED....
So you're given a sentence where if there is a particular word in the sentence then the output is 1, if it is not there then the...

14 hours ago

Solved


ABBREVIATION
Abbreviate the given string. Consider Only Capital Letters. EXAMPLE If input is 'Abbreviation of The Given String' then ou...

14 hours ago

Solved


Convert Two Character String into a Binary Vector
Given a string "XOXXO" convert it into a binary vector. [1 0 1 1 0] Paul Berglund implemented an optimal method in <http://ww...

14 hours ago

Solved


Is the paranthesis sequence balanced ?
Quantum mechanics and computer science are interested in <http://en.wikipedia.org/wiki/Bra%E2%80%93ket_notation bra-kets>. Today...

14 hours ago

Solved


Count letters occurence in text, specific to words with a given length.
Build a function with two input arguments: a string and a word length (number of letters), that outputs a vector of counts of th...

1 day ago

Solved


Simple Caesar Cypher - shift encrypt a message given an index number
A Caesar cypher is a simple shift encryption method. Your goal is to create a function that allows a user to input a string and ...

1 day ago

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most frequent character
Obtain the most frequent character. For example, s='balaram'; output='a'; If there is a tie between letters, return t...

1 day ago

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Alternately upper-lower case
Modify the string to alternate between upper and lower case. For example, s='achyuta' output='AcHyUtA'

1 day ago

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Split a given string from the first instance of a given character
A simple operation to split a given string into two substrings at the point where the desired character is first found. e.g. ...

1 day ago

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How many digits are there?
Input(s) - any string Output(n) - number of digits within string s

1 day ago

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Join Strings with Multiple Different Delimiters
The idea is to form the string S by interleaving the elements of a cell array of strings DELIMITER and another cell array of st...

1 day ago

Solved


Simple Decoder Ring
The stereotypical _decoder ring_ is remembered as a cereal box prize from the 1950s. Kids learned about cryptography by startin...

1 day ago

Solved


Eliminate Polysyllabics: Long live short words!
Given a string s1, return s2 in which all the words with more than one syllable have been removed. To make things simple, we ...

1 day ago

Solved


Morse Code Generator! Try it!
.... . .-.. .-.. --- . ...- . .-. -.-- --- -. . -.-.-- .-.. . - ... -.. --- ... --- -- . -- --...

1 day ago

Solved


Split bread like the Pharaohs - Egyptian fractions and greedy algorithm
How would you split 5 loaves of bread among 8 people in all fairness? Get a hint from the Pharaohs. 5/8 = 4/8 + 1/8 , i.e. each ...

1 day ago

Answered
Recreate Matlab figure in Excel?
You can always use ActiveX (this will be phased out in a future version of MATLAB) to build plots directly in your Excel file. H...

1 day ago | 0

Answered
Read only numerical value or seperate data using deliminater
Assuming that you ultimately want to extract the date/time and resistance values, and assign them to separate variables, the fol...

1 day ago | 0

| accepted

Answered
Extracting second number after comma within parenthesis
Assuming that the number will always be in scientific notation, then the following should work. TOC = regexp(str,'(?<=\(.*?,)\d...

1 day ago | 1

| accepted

Answered
Using strcmp with multiple inputs
You can use strcmpi, which is a non-case-sensitive version of strcmp. B = find(strcmpi(rw(:,3),'boskalis westminster dredging l...

2 days ago | 0

Answered
Modify Strings in cell array according to pattern
Let me know how this works for you. B = {'C3H7O';'C2H7O2';'C2H7O2+';'C4H5O';'C4H5O';'C3H3O2';'';'C4H7O';'C3H5O2';'C3H7O2';'C2H5...

2 days ago | 1

| accepted

Answered
Problems with min and max functions
Since you are defining your function as having a input x, you do not need to redfine it within your function. You can also achie...

5 days ago | 1

| accepted

Answered
Modify Strings in cell array according to pattern
I am sure that there is a much more elegant method using just regular expressions, but the following should give you what you ar...

6 days ago | 0

Answered
How do I construct this function?
The following should accomplish what you are asking. function TF = issquare(A) % Verifies that A is a numerical matrix with ...

6 days ago | 0

Answered
Output argument ‹variable› (and maybe others) not assigned during call to ‹function›
Currently, you have only decleared pdf as an output argument at the start of your function, but have neglected to assign a value...

13 days ago | 0

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