Sune

Last seen: Today | Active since 2025

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Python with MATLAB

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Calculate the Damerau-Levenshtein distance between two strings.
<http://www.mathworks.co.uk/matlabcentral/cody/problems/2303-compute-hamming-distances-between-each-pair-of-rows-from-two-input-...

13 hours ago

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Decrypt the cypher using XOR encryption (for beginners)
Inspired by Project Euler n°59 Each character on a computer is assigned a unique code and the preferred standard is ASCII (...

15 hours ago

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From a given cell array of strings, extract the non-unique strings.
We are given a cell array of strings C. From this cell array we require to extract the subset of non-unique strings, returning t...

15 hours ago

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longest common substring : Skipped character version
Two strings are given. Find the longest common substring between them. The substring characters need not be adjacent. They, howe...

16 hours ago

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Did you say please? - Find one string within another without strfind or regexp/regexpi
For a given string sentence, determine if the string word 'please' is present or not. If so, return the string 'OK', else return...

16 hours ago

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Concatenate string with cell array of strings
Given a cell array of strings (a), a target string (b), and a target position (ind), return a cell array of strings (c) in which...

16 hours ago

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Find the longest match inside two strings
Given two strings, find the longest string which is contained within both strings. e.g. the longest string that is contained ...

16 hours ago

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Flipping a Matrix
Flipping matrix up and down. If a central row is exists, leave it, and flip remaining rows. Example Mat = magic(3) ...

16 hours ago

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Replace Nonzero Numbers with 1
Given the matrix x, return the matrix y with non zero elements replaced with 1. Example: Input x = [ 1 2 0 0 0 ...

1 day ago

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Broken numlock key, oppps !
The numlock key on my computer is pressed and is now broken, so I cant press it to switch off the numlock mode. And hence I am n...

1 day ago

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Flip the bit
Given an input character string (e.g. '1001'), return a character string with the bits flipped ('0110').

1 day ago

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Cat, Meowcat and Concatenation
Input is a cell array containing several strings. Find the largest continuous sub-string common to all strings. All strings are ...

1 day ago

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longest common semi-substring
Finding longest common substring is a common problem in string processing. This problem is a variant of that. Two strings are g...

1 day ago

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Prime Letters = Removing
Given a string, remove all the letters which in ASCII Code are prime numbers. For Example: s1 = 'Determine which array e...

1 day ago

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Legend of Zelda - Rupee Count (Item Purchase)
Building off of <https://www.mathworks.com/matlabcentral/cody/problems/3025-zelda-rupee-count Problem 3025>, suppose that an arr...

2 days ago

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Legend of Zelda - Rupee Count
Rupees are the main currency in The Legend of Zelda games. The value of each rupee is determined by its color. Unfortunately, th...

2 days ago

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Beauty of Parentheses
Given a string consisting of closed parentheses, form a string array in the following way so that the orders of these parenthese...

2 days ago

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Reverse within string
If input is a string 'yellow' the output should be 'leywol'. Locate the middle of the string and reverse the first (yel) and sec...

2 days ago

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Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

3 days ago

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Genome decoding
Inspired by a question on the answer forum: You are given a matrix of 8-bit integers which encodes a genome. Each integer can...

7 days ago

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Convert a vector into numbers
Suppose a vector x = [ 1 2 4 7] is given. You have to convert this vector into string number y = '1247'. Examples x = [ 1...

7 days ago

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Calculator spelling - Letters to Numbers
Using the numbers on a calculator, and rotating the display 180 degrees, many words can be spelled. In particular, the following...

7 days ago

Solved

Calculator spelling - Numbers to Letters
Using the numbers on a calculator, and rotating the display 180 degrees, many words can be spelled. In particular, the following...

7 days ago

Solved

Legend of Zelda - Rupee Count (Compact)
Building off of <https://www.mathworks.com/matlabcentral/cody/problems/3025-zelda-rupee-count Problem 3025>, suppose that Link's...

7 days ago

Solved

Adding Cells with numbers defined as strings
Given a cell, with strings representing numbers, add each value. For example: a = {'9','33'}; the output should be: ...

7 days ago

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Shorten pathname
Given a pathname string, return a condensed version by replacing intermediate folders with '..'. *Example* If fullpat...

7 days ago

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How to reverse spdiags?
The spdiags function extracts all nonzero diagonals from the m-by-n matrix A. So if A=[1 2 3;4 5 6;7 8 9], spdiags(A)=[7 4...

8 days ago

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Longest Sequence of NaNs
In an array return the length of longest sequence of nans for each column. x = [ 2 3 1 2 5 6; nan nan 5 n...

9 days ago

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Pancake sorting - minimum flips.
Sort a stack of pancakes by flipping them using spatula. There are N pancakes with diameters 1:N. Spatula can be inserted anyw...

9 days ago

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Pancake sorting
Sort a stack of pancakes by flipping them using spatula. * There are _N_ pancakes with diameters _1:N_. * Spatula can be ins...

9 days ago