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Sum the numbers on the main diagonal
Sum the numbers on the main diagonal of an n-by-n matrix. For input: A = [1 2 4 3 6 2 2 4 7]...
13 years ago
Solved
Parasitic numbers
Test whether the first input x is an n-parasitic number: <http://en.wikipedia.org/wiki/Parasitic_number>. ( _n_ is the second in...
13 years ago
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Woodall number
Test whether the input is a Woodall number: <http://en.wikipedia.org/wiki/Woodall_number> _Please do not cheat by simply chec...
13 years ago
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Fill a zeros matrix
The aim is to fill an array of all zeros given a numerical value and the index of row and columns for this value. 3 Inputs: ...
13 years ago
Solved
Sum the entries of each column of a matrix which satisfy a logical condition.
Given a numeric matrix A and a logical array L of the same size as A, return a row vector S containing the columnwise sums of th...
13 years ago
Solved
Solve the set of simultaneous linear equations
Given this pair of simultaneous linear equations: 2x + 3y = 23 3x + 4y = 32 Find the solution set (x,y)
13 years ago
Solved
collision
several cars (n) were involved in this collision, the input matrix (vm) has n rows and two columns, first column for velocity an...
13 years ago
Solved
Return the Fibonacci Sequence
Write a code which returns the Fibonacci Sequence such that the largest value in the sequence is less than the input integer N. ...
13 years ago
Solved
Kaprekar numbers
Test if the input is a Kaprekar number: <http://mathworld.wolfram.com/KaprekarNumber.html>. Return a logical true or false. ...
13 years ago
Solved
Volume of this donut
Given hole diameter a, and outermost diameter b, determine the volume y of the resulting donut.
13 years ago
Solved
Transpose
Write a MATLAB script in order to convert a random length row vector (v) into a column vector.
13 years ago
Solved
Hackathon: the beginnings
I am thinking of a number between 1 and 10000... can you guess what this number is? *Description* The test suite has rando...
13 years ago
Solved
How long is the longest prime diagonal?
Stanislaw Ulam once observed that if the counting numbers are <http://en.wikipedia.org/wiki/Ulam_spiral arranged in a spiral>, t...
13 years ago
Solved
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
Example: in = magic(5) in = 17 24 1 8 15 23 5 7 14 16 4 6 13 20 ...
13 years ago
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Number of digits in an integer
Specifies how many digits in a given integer. Example: in=100 ==> out=3
13 years ago
Solved
Generate a NaN...on purpose
The goal is to create a function that will return a single "NaN" without using the nan function. I am interested to see how many...
13 years ago
Solved
Tricky timing
Write a function that takes between 0.5 seconds and 0.6 seconds to run.
13 years ago
Solved
Find out missing number from a vector of 9 elements
You are given a vector of size 9, x = [x1 x2 x3 x4 x5 x6 x7 x8 x9] Elements of x may be randomly selected without repeati...
13 years ago
Solved
Sum the Digits of a Number
Given an integer, sum the digits repeatedly until you end up with a single value less than 10. For example, if you add the di...
13 years ago
Answered
How to use an impoint?
See |help ginput|. A minimal working example: pcolor(rand); [x,y] = ginput(1); % User clicks a value. x = ...
How to use an impoint?
See |help ginput|. A minimal working example: pcolor(rand); [x,y] = ginput(1); % User clicks a value. x = ...
13 years ago | 0
Submitted
Increment/Decrement uicontrol
A custom uicontrol for making increment/decrement button pairs.
13 years ago | 610 downloads |
Solved
What's Your BMI?
Find the body mass index. For reference, please refer to Wikipedia here: <http://en.wikipedia.org/wiki/Body_mass_index body ...
13 years ago
Solved
Back to basics 18 - justification
Covering some basic topics I haven't seen elsewhere on Cody. Given a string with extra spaces in front and/or in back, return...
13 years ago
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peta to nano (x-ray)
for certain x-ray radiation, given frequency in petahertz, give wavelength in nanometer, must be accurate +/- 25%
13 years ago
Answered
surf won't display zeros in the last row?
The |surf| command is plotting *from* 1 *to* 15. If you want to show the width of the 15th block, you'll need to supply data up ...
surf won't display zeros in the last row?
The |surf| command is plotting *from* 1 *to* 15. If you want to show the width of the 15th block, you'll need to supply data up ...
13 years ago | 1
| accepted
Answered
Creating Graphical User Interface for a Code
If you are new to MATLAB GUI programming, your best bet is to use GUIDE. Type 'guide' on the MATLAB command line to begin. There...
Creating Graphical User Interface for a Code
If you are new to MATLAB GUI programming, your best bet is to use GUIDE. Type 'guide' on the MATLAB command line to begin. There...
13 years ago | 0
Answered
GUI increment/decrement buttons linked to an Edit Text box
I've been thinking about doing something like this for a project I'm starting. Your question prompted me to just go make a first...
GUI increment/decrement buttons linked to an Edit Text box
I've been thinking about doing something like this for a project I'm starting. Your question prompted me to just go make a first...
13 years ago | 1
| accepted
Solved
Basics: 'Find the eigenvalues of given matrix
Find the eigenvalues y for a given matrix x.
13 years ago