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Find names/words that start and end with the same letter.
Find names/words (from a string) that start and end with the same letter. * Case-insensitive. * If a name/word is not at the...

2 months ago

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Cut the rod
A rod of length n can be cut in different sizes. Different price is associated with different length of cuts. length, len= [1,...

2 months ago

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The Google Interview: Two Eggs Problem
Consider the following problem, a popular Google interview question: A firm has invented a super-strong egg. For publicity pu...

2 months ago

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Get Next Combination
Return next combination For example three-element combinations of 1:5 1 2 3 1 2 4 1 ...

2 months ago

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Can't wait for NewYear ball drop !
Given an input string of the form 'yyyy-mm-dd' or 'yyyy-mm-dd hh:mm:ss', return a string message indicating how many days, hours...

2 months ago

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Back to basics - array operations
Without performing actual arithmetic operations on arrays, return feasibility of operation as true or false. True if given opera...

2 months ago

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Subtract two positive numbers
Given a and b as a string, return b-a without using string to number conversion functions. a and b must to be a same size and b ...

2 months ago

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Multiply 2 numbers
Very easy, you just have to multiply 2 numbers but you cannot use the following signs (*, /, - ,^) ,mtimes , times, cross, pro...

2 months ago

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Raise Matrix to Power
For a given square matrix x and scalar a, find x^a without using '^' or 'mpower'.

2 months ago

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Successive zeros
Suppose n is the number of digits a number contains. Now, 12032 - is a valid n=5 digit number. But 10023 - is defined as i...

2 months ago

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Minimize a quadratic function
Write a function to minimize the function . The coefficients a, b, and c will be positive. Give the coefficients in a vector coe...

2 months ago

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Secure Password
You are joining the MATLAB Central platform to solve a question on Cody. The signup page, requires you to input an id and a pass...

2 months ago

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Find out DC Gain of transfer function
Find out DC Gain of transfer function Example, G(s)=5/ (s+2), then DC gain is 2.5 (put s=0)

2 months ago

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Area-04
The dimension of a rectangle is given. There are two circles of equal size that are inscribed inside it.The circles are tangent ...

2 months ago

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Increasing sub-sequence (Level 2)
This is the next step up from <http://www.mathworks.com/matlabcentral/cody/problems/42837-increasing-sub-sequence-level-1 Proble...

2 months ago

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String math
You will be given a string that describes a simple math equation. Your job is to determine if the value of the equation is equal...

2 months ago

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Decrypt a secret message!
The crypto system in question is based on phone keyboard. We need two numbers in order to decrypt a word. First number represent...

2 months ago

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Create array of all Distances between two Sets of Points : No Neural Network Toolbox
This Challenge is a subsection of <http://www.mathworks.com/matlabcentral/cody/problems/1110-usc-fall-2012-acm-martian-pranks Ma...

2 months ago

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FizzBuzz
<http://c2.com/cgi/wiki?FizzBuzzTest FizzBuzz Test> The "Fizz-Buzz test" is an interview question designed to help filter out...

2 months 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 months ago

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Usage of java.math : Add, Multiply, Pow
This challenge is an introduction to the wonderful word of java.math that allows unlimited precision calculations. The primary ...

2 months ago

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Self-Description
This is a simplified version of the <http://xkcd.com/688/ *xkcd comic* by the same name>. Simply return the angle (in degrees...

2 months ago

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Calculate geostrophic current
eta0=0.01; R=300; f=0.01; g=9.81; x=-500:50:500; y=-500:50:500; [x y]=meshgrid(x,y); eta=eta0*exp(-(x.^2+...

2 months ago

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Weird Diagonal Matrix!!
**If you have loved the problem, please like it below(Request)** Given an integer n, create a matrix whose diagonal elements wi...

2 months ago

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Primes Faster for Large N
This Challenge is to improve the "primes" function for speed. This may be accomplished by fixing memory usage. The Matlab fun...

2 months ago

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Creation of 2D Sinc Surface
This Challenge is to efficiently create the Sombrero function of various sizes, resolutions, and frequencies. <<https://sites...

2 months ago

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Arrow!!
Write a script that gives (( follow the example)) if x=4 & output= 1 1 1 1 1 1 0 1 1...

2 months ago

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Extra colors
Context In the RGB color system used by Matlab, the color is a 1 x 3 / row vector [R G B] with each value/component R, G, B in ...

2 months ago

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Determine if LTI system with feedback control is stable
Linear timeiinvariant systems can be represented by the differential equation , where is an matrix, is an vector representing...

2 months ago

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Generate Secret Key for Cryptography
From a seed file (code.wav), decode the audio file (Bell 202 format at 200 bits/sec) into a binary stream and then convert the b...

2 months ago