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Generate a string like abbcccddddeeeee
This is the string version of Problem 1035. <http://www.mathworks.com/matlabcentral/cody/problems/1035-generate-a-vector-like-1-...

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Coefficient of Kinetic friction
A robot exerts a F1 lb. force horizontally on a W lb. crate across a concrete floor at a constant speed. What is the coefficien...

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Create logarithmically spaced values (★)
Given three numbers a,b,n with b>a, create a vector y with n logarithmic spaced values between 10^a and 10^b. Thus, if a = -2, ...

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Calculate FFT
Calculate the fft manually, without using matlab's builtin function. No cheating allowed.

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Is there a GPU Device?
Return true if there is a supported GPU device available on the Cody computer.

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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...

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Odd elimination
Inspired by Project Euler problem #539 You'll be given a vector from 1 to n; Going from left to right, remove the first n...

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Code Wheel
Create a function that offsets each value in a given string by a given amount. For instance, codewheel('hello',1) s...

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Beads on a Necklace (Convex Hulls)
We may describe a <http://en.wikipedia.org/wiki/Convex_hull convex hull> as a rubber band stretched around a list of points. Som...

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Ratio between sum of primes and sum of factors
Write a function that calculates the ratio between the sum of primes numbers lower or equal to x, and the sum of the factors of ...

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Reindex a vector (★★)
(copy of Prob. 676) You are given two vectors of equal length. Vector N has numeric values (no Inf or NaN) while vector IDX h...

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Seperate array to small section according to its index position
Given a integer n, we can generate a sequence [0,1,2,3,4,..., 2^n-1], then we separate it to two sequence according to their ind...

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Remove the air bubbles from a vector
_*A reduced version of Problem 112*_ Given a column vector v, return a vector w in which all the zeros have "bubbled" to the ...

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Area-03
There are two circles of equal size are inscribed inside a square. They are tangent to each other. <https://serving.photos.ph...

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GJam 2013 Veterans: Hedge
This Challenge is derived from <http://code.google.com/codejam/contest/2334486/dashboard Hedgemony>. This is the Large data set ...

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Armstrong Number
Write a function name armstrong_check that checks whether the given input is an Armstrong Number or not. It returns logical True...

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Maximum sum from any 2 numbers with a variable number of inputs
Given a variable number of inputs, combine any 2 numbers from the inputs and output the maximum sum the combinations can generat...

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Identify Ruth-Aaron numbers
After Hank Aaron hit his 715th home run and passed Babe Ruth’s total of 714, Carl Pomerance noticed that the union of the prime ...

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Geometrical meaning of determinant
Given two vectors x,y, in 2D or three vectors x,y,z in 3D space, compute the area (or volume) of the parallelogram they define. ...

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Double Deal
*Description* Given an input vector _v_, return the first element as the first output, the second element as the second outpu...

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the fly, the train, the second train, and their Zeno's paradox
*You have heard this one*: A train leaves station _A_ and travels with constant velocity _v1_. A second train leaves station _B_...

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Rolling maximums above a threshold
You are given either a vector or a 2-D matrix M and a threshold value of t. Write a script that will calculate how many times t...

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GJam March 2016 IOW: Password Single
This Challenge is derived from <http://code.google.com/codejam/contest/8274486/dashboard#s=p3 GJam March 2016 Annual I/O for Pas...

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Ring Matrix
Given n (only odd), return output matrix a that has concentric rings of the numbers 1 through (n+1)/2 around the center point. ...

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Net Present Value of a Stream of Cash Flows
Calculate the net present value of a future cash flow vector given; future cash flow vector (F) and interest rate (i) assume;...

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Simple date to serial no. conversion
Convert a date string to a serial date number. For example if you take x='19-May-2001' then the result is 730990 x...

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Apply a function array to an array of numbers
It is required to apply a cell array of functions to a numerical array, where the functions accept only scalar inputs. Exampl...

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Make a run-length companion vector
Given a vector x, return a vector r that indicates the run length of any value in x. Each element in r shows how many times the ...

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Sum the elements in either diagonal of a square matrix
Sum the elements of a square matrix that lie on either the major diagonal or anti-diagonal. (Include all elements that are part ...

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Find the elements of a matrix according to a defined property.
From A = [5,2,3] and B = [1,2,3,4,5,6,7,8,9,10] produce a vector C where : C(1) is the sum of the first A(1) elements of B, ...

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