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Determinant without using det()
Given a square matrix A, compute the <http://en.wikipedia.org/wiki/Determinant determinant> of A. Note that you may not use t...

mehr als 11 Jahre vor

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Count number of words in string
Count number of words in string E.g. 'hi', answer is 1 'hi hi', answer is 2 'I enjoy cody', answer is 3

mehr als 11 Jahre vor

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Find the distance between runs
Another question inspired by the <http://uk.mathworks.com/matlabcentral/answers/?s_tid=gn_mlc_an answers forum>: A vector of ...

mehr als 11 Jahre vor

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Pandigital Factors (Based on Euler 491)
A Pandigital Number is a number containing all of the digits from 0-9 inclusive, with the added stipulation that it does not hav...

mehr als 11 Jahre vor

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Go to the head of the class!
You're given a matrix and a single number. If that number is in the matrix, reorder the matrix so that number is in the first r...

mehr als 11 Jahre vor

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Simulate one complete step in the Biham–Middleton–Levine traffic model
The <http://en.wikipedia.org/wiki/Biham%E2%80%93Middleton%E2%80%93Levine_traffic_model Biham–Middleton–Levine traffic model> is ...

mehr als 11 Jahre vor

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Keep Only the Upper characters in a string
Keep Only the Upper characters in a string s = 'Sreeram Mohan'; output = SM;

mehr als 11 Jahre vor

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FloydWarshall
Our task is to find shortest paths between every pair of nodes. Floyd-Warshall is a graph algorithm for finding shortest paths i...

mehr als 11 Jahre vor

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Generalised Hamming Number
Inspired by Project Euler n°204 and Problem 1308 by James A generalised Hamming number of type n, has no prime factor larger ...

mehr als 11 Jahre vor

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Check if vertices form a rectangle
Given a set of 4 vertices defined by vectors X and Y, return true if the vertices form a rectangle and false otherwise. X and...

mehr als 11 Jahre vor

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Error handling
If the input is a negative number, generate an error. Otherwise, return the number.

mehr als 11 Jahre vor

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Ulam spiral 2: The revenge
Starting from the problem <https://www.mathworks.com/matlabcentral/cody/problems/2644-the-ulam-matrix>, transform the Ulam Matri...

mehr als 11 Jahre vor

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Find similar sequences
Another problem inspired by a question on the <http://www.mathworks.com/matlabcentral/answers answers> forum. Given a matrix ...

mehr als 11 Jahre vor

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Dispatch and collect
Write a function that dispatches the single argument _x_ to multiple function handles (varargin) and concatenates vertically the...

mehr als 11 Jahre vor

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Higher! Lower!
My kids have started to play the "I'm thinking of a number between X and Y" game in the car on trips to and from their swim less...

mehr als 11 Jahre vor

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Yet Another Path Finder
Assume there is a rectangular grid of points. These points are indicated by linear indices in a MATLAB-fashion. Some of the grid...

fast 12 Jahre vor

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Sum the real and imaginary parts of a complex number
Sum the real and imaginary parts of a complex number. Example c = 1+2i has the solution 1 + 2 = 3

fast 12 Jahre vor

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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 (...

fast 12 Jahre vor

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If-then-else
Complete the function below such that if the value of x is in the range 10 to 14, inclusive, the value 18 is assigned to y. Oth...

fast 12 Jahre vor

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Is this triangle right-angled?
Given three positive numbers a, b, c, where c is the largest number, return *true* if the triangle with sides a, b and c is righ...

fast 12 Jahre vor

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Length of a short side
Calculate the length of the short side, a, of a right-angled triangle with hypotenuse of length c, and other short side of lengt...

fast 12 Jahre vor

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Area of an Isoceles Triangle
An isosceles triangle has equal sides of length x and a base of length y. Find the area, A, of the triangle. <<http://upload...

fast 12 Jahre vor

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Is this triangle right-angled?
Given any three positive numbers a, b, c, return true if the triangle with sides a, b and c is right-angled. Otherwise, return f...

fast 12 Jahre vor

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Area of an equilateral triangle
Calculate the area of an equilateral triangle of side x. <<http://upload.wikimedia.org/wikipedia/commons/e/e0/Equilateral-tr...

fast 12 Jahre vor

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Dimensions of a rectangle
The longer side of a rectangle is three times the length of the shorter side. If the length of the diagonal is x, find the width...

fast 12 Jahre vor

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Side of an equilateral triangle
If an equilateral triangle has area A, then what is the length of each of its sides, x? <<http://upload.wikimedia.org/wikipe...

fast 12 Jahre vor

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Side of a rhombus
If a rhombus has diagonals of length x and x+1, then what is the length of its side, y? <<http://upload.wikimedia.org/wikipe...

fast 12 Jahre vor

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Determine the Result of a Move in Reversi
Note: This is closely related to <http://www.mathworks.com/matlabcentral/cody/problems/2538-find-the-next-legal-move-in-reversi ...

fast 12 Jahre vor

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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...

fast 12 Jahre vor

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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...

fast 12 Jahre vor