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Only once: cleaning up your columns
We have a logical array (with ones and zeroes). It is simple: after processing every column may only contain a single true value...

2 years ago

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Create an arrow matrix
An arrow matrix is a square matrix that contains ones on the diagonal, the last column, and last row. ...

2 years ago

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Draw a X
Given an input , create a square matrix of zeros with an X of ones. Ex. n = 3 drawX(3) [ 1 0 1 0 1 0 1 0 1 ] ...

2 years ago

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What day is it?
Tell me what day is it. Return the full name of the day of the week as a string. e.g. It's June 12th 2014, so your function s...

2 years ago

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Find my secret function IV
We use the same secret function used on the past "Find my secret function ..." x=23 -------->> y=3 X=1000 ------->> 163

2 years ago

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Factorial: Unlimited Size : java.math
This challenge is an application of java.math that allows unlimited precision calculations. The primary reference sites are <ht...

2 years ago

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Relation between functions "dec2bin" & "dec2binvec"
Here it's an easy problem we try to find the relation between the two functions "dec2bin" & "dec2binvec", so here you must write...

2 years ago

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Primes for Large N: 2^30, System Memory Limit
This Challenge is to further improve the "primes" function for speed/memory usage to the Limit of Cody Memory. The Matlab fun...

2 years ago

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Usage of mkdir and copyfile
This Challenge is to copy a file into a new directory multiple levels below existing directory architecture. System appears ...

2 years ago

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Reindex a vector
You are given two vectors of equal length. Vector N has numeric values (no Inf or NaN) while vector IDX has integers. Place th...

2 years ago

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Longest Divisor Run
Given the vector a, find the longest run of consecutive numbers that can be evenly divided by the same number d where d > 1. ...

2 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...

2 years ago

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Make a simplified barcode
Given an integer to encode, make a barcode using the following encoding scheme: * The bar code is made from the binary versio...

2 years ago

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Function Call Counter

2 years ago

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Nonuniform quantizer as a piecewise constant function
Implement a nonuniform quantizer as the following piecewise function: y = -3.5, x < -3 y = -1.5, -3 ≤ x < -1 y = ...

2 years ago

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Create a function handle that reverses the input arguments of another function handle
Given a function that takes two input arguments and returns one output, create another function handle that performs the same op...

2 years ago

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Gaussian elimination
Get the Gussian elimination of the Matrix Given You cannot use built-in Matlab functions triu :)

2 years ago

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Function composition - harder
Write a function that accepts an arbitrary number of function handles f_1, f_2, ..., f_n and returns the composition h. That is,...

2 years ago

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Extract the Acrostic Message
An acrostic cipher is a way of embedding one message within another by taking the first (or last) word of each line. Given a str...

2 years ago

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Generate Tribonacci Sequence
The "Tribonacci" sequence is an extension of the idea of the Fibonacci sequence: That is, each new term is the sum of the thr...

2 years ago

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Dice face matrix!
This is dice simulator, but instead of making a random die number, you will receive an "pre-rolled" number in and spit out a mat...

2 years ago

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Boustrophedon
Given a vector v and a positive integer n, return an m-by-n matrix containing the elements of v row-wise, alternating left-to-ri...

2 years ago

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Numbers in extended form
Shhhhhhh. Don't tell my daddy, but I'm borrowing his Cody account so all of you very smart people can help me out. I just star...

2 years ago

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Create sine function out of cosine
Please don't use sin(x) directly

2 years ago

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Numbers at bit-boundary
Find if a number is on or below the bit-boundary, as defined below. Examples 7,9 straddle the bit-boundary at 2^3 as do 31,32 ...

2 years ago

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That's some divisor you've got there...
Given a positive integer x, calculate the sum of all of the divisors of the number. Please include the number itself in your fi...

2 years ago

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Create a v-notch vector without "sort" function
Given a vector vec, create a v-shaped vector as shown below: vec = [ 10 2 3 89 5 7 90 0 12] Output vector = [90 89 12 10 7 5 3 ...

2 years ago

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X O X O
On a noughts and crosses board, how many possible unique combinations are there given a square grid of length n? Assumptions/...

2 years ago

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Matrix game: Winner takes all
Given a matrix A, return a new matrix of the same size in which the biggest element of each column in A takes 1, and 0 for all t...

2 years ago

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generate the matrix
given a value n (say 4) - generate the matrix like below y= [0 1 2 3 4; -1 0 1 2 ...

2 years ago