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Calendar Matrix
Return a calendar matrix for the given values of month and year. Assume that Sunday is the first day of the week. The resulting ...

12 years ago

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Path calculation with polynomials
Let a vector x be the input to our function. 1. If a value of an input vector element x is lower than 0, set this value to 0....

12 years ago

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Test within tolerance
Given a vector of experimental data, D, and a vector of truth data, T, return FALSE if any +/- errors (D-T) are outside a given ...

12 years 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...

12 years ago

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A Poker Hand
Texas Hold ‘Em is a classical card game. In this problem, we are concerned with determining the probability of attaining a certa...

12 years ago

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Additive persistence
Inspired by Problem 2008 created by Ziko. In mathematics, the persistence of a number is the *number of times* one must apply...

12 years ago

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is the number happy?
test is a given integer number is Happy of not? answer 1 if yes or 0 is no

12 years ago

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Delete the rows in the middle
We will delete the rows in the middle and keep the first and the last rows. For example if input is [1 2 1 7 1 8 ...

12 years ago

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Finger Counting
Just counting numbers using fingers. First all my ten fingers are closed. I will say 1 and open my one finger. Likewise for 6...

12 years ago

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How many rectangles in a grid ?
How many rectangles are there in an m × n grid ? For example, if m=1 & n=2, we have 3 rectangles.

12 years ago

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Best Fit RMS
Given a set of data as x and y, find the <http://en.wikipedia.org/wiki/Root_mean_square RMS> value between the data and its best...

12 years ago

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Magic!
Check whether the input matrix is a normal magic square: <http://en.wikipedia.org/wiki/Magic_square> Output the logical va...

12 years ago

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Is this group simply connected?
Given connectivity information about a graph, your job is to figure out if the graph is fully connected. You are given a list of...

12 years ago

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Another colon problem
This is simple problem based on problems 555, 801, 1118, etc. Create an index vector from two input vectors. Example: ...

12 years ago

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Fermat's Last Theorem - Fermat's conjecture
Fermat's Last Theorem (sometimes called Fermat's conjecture, especially in older texts) states that no three positive integers a...

12 years ago

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Cell Source Index
Suppose that C is a cell array whose elements consist of row vectors of elements of the same type. For example, C could be a ce...

12 years ago

Solved

Convolution Power
Create the convolution-power vector from initial vector _x_ and power _n_. In other words, similar to the scalar case, raising ...

12 years ago

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Numeric array to cell array of strings (easy)
Given a numeric array (A) and a 1xk cell array of strings (C), return a cell array (B) that is the same size as A and in which e...

12 years ago

Solved

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...

12 years ago

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Persistent Usage
This Challenge is to implement the Matlab Persistent variable capability. Given a sequence of Calls to a function return the ...

12 years ago

Solved

Number Persistence
A number's persistence is the number of steps required to reduce it to a single digit by multiplying all its digits to obtain a ...

12 years ago

Solved

THE CALCULATOR OF LOVE
In honor of Valentine's Day, program a love calculator that figures out the percentage of compatibility between two people using...

12 years ago

Solved

Decoding : Find the value
'u' in the function below is of type char or string and 'v' is of type int or double. function y = your_fcn_name( u, v) ...

12 years ago

Solved

Combinations without using nchoosek
You have to generate a matrix with all possible combinations of n elements *taken 2* at a time, *without using nchoosek(1:n,2)* ...

12 years ago

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Justify the character string in center with proportional fonts
how to justify a string of character into center with proportional fonts? Example: x='justify string ' output is ' justif...

12 years ago

Solved

Set a Soroban Abacus
*Description* This problem is the inverse of <http://www.mathworks.com/matlabcentral/cody/problems/136-read-a-soroban-abacus ...

12 years ago

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Read a Soroban Abacus
*Description* The Soroban is the name of the modern Japanese abacus. Information on reading a Soroban can be found <http://we...

12 years ago

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Distance walked 3D
suppose you go from x-y-z coordinates [3,4,2] to [0,0,2] to [0,1,2] to [1,1,2], to [1,1,20] then you walked 25 units of distance...

12 years ago

Solved

Nearest Numbers
Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

12 years ago

Solved

Polybius Square
Given a string, calculate the coordinates. Input will be always in lowercase. If string is a sentence then use 0 (zero) to indic...

12 years ago