Community Profile

# David Verrelli

Last seen: 3 mesi fa Attivo dal 2015

Followers: 0   Following: 0

http://www.research.div1.com.au/ Highest Cody ranking = 42nd (10000 points, in July 2018).

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#### Feeds

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Wait a second!
Your code needs to take 'exactly' one second to run — accurate to ±0.5 milliseconds. The input will be the number of millis...

circa 2 anni fa

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N-Dimensional Array Slice
Given an N-dimensional array, _A_, an index, _I_, and a dimension, _d_, return the _I_ th elements of _A_ in the _d_ dimension. ...

oltre 2 anni fa

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Operate on matrices of unequal, yet similar, size
You may want to add a vector to a matrix, implying that the vector is added to each column of the matrix. Or multiply a 3x4x5 ma...

oltre 2 anni fa

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Comparison of floating-point numbers (singles)
Floating-point numbers cannot generally be represented exactly, so it is usually inappropriate to test for 'equality' between tw...

quasi 3 anni fa

Problema

Guess the number I'm thinking of (Part 2)
Have you tried the original "Guess the number I'm thinking of" (Problem 44630)? This problem is just like that, except that the...

quasi 3 anni fa | 1 | 4 risolutori

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What score did they give?

quasi 5 anni fa

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Combine the first and last names
MATLAB R2016 provides a rich set of functions to work with string arrays. In this problem, you will be given two string arrays o...

oltre 5 anni fa

Problema

What score did they give?

quasi 6 anni fa | 1 | 9 risolutori

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Create tangent function out of sin and cos

quasi 6 anni fa

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How to Concatenate two strings?
How to Concatenate two strings?

quasi 6 anni fa

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Create a function without inputs that adds one to the output every time it is called. A different possibility of solving this ha...

quasi 6 anni fa

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Calculate correlation.
There are two data. y1=[0 1 2 3 4]' y2=[2 3 4 5 6]' We can see positive relationship between y1 and y2. The relations...

quasi 6 anni fa

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Implement zero-based indexing for Matrices
Given an input vector and position (which is zero based) output the value Example: x = [1 2; 4 5] pos = [0 1] value = 5 ...

quasi 6 anni fa

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Make roundn function
Make roundn function using round. x=0.55555 y=function(x,1) y=1 y=function(x,2) y=0.6 y=function(x,3) ...

quasi 6 anni fa

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Replace x value into y value in string text.
Replace x value into y value in string text. Example text='Hello World' x='World', y='Universe' result='Hello Universe'.

quasi 6 anni fa

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Analyze observation data
Suppose you have the following data (A,B,C) in three-column format. A B C -------------------------- t=1 ...

quasi 6 anni fa

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Probabilities - Balls and urns - 02
The urn contains B blue balls and R red balls. Each trial consists of drawing one random ball from the urn and observing its col...

quasi 6 anni fa

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Solve equation numerically
y'=y In order to solve equation using computer, numerical analysis are needed. 1st order Euler's method is one of the metho...

quasi 6 anni fa

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Get Cody's screen size
Return an object that helps this problem's test suite return Cody's screen size.

quasi 6 anni fa

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Create a function that subtracts a from b if a and b are integers and adds them if they are floats.

quasi 6 anni fa

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Circumscribed Pentagon?
Building off of <https://www.mathworks.com/matlabcentral/cody/problems/44368 Problem 44368>, your function will be provided with...

quasi 6 anni fa

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Calculate numerical integration.
x=0:0.01:1 y=@(x)x.^2 Using given two inputs(x and y), conduct numerical integration in x. (hint: trapz)

quasi 6 anni fa

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Tridiagonal matrix
Given vectors u and v, make a tri-diagonal symmetric matrix such that u is in the main diagonal and v is below and above diagona...

quasi 6 anni fa

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Calculate area of sector
A=function(r,seta) r is radius of sector, seta is angle of sector, and A is its area. Area of sector A is defined as 0.5*(r^2...

quasi 6 anni fa

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Given square matrix, and solution vector, find the values of the variables Example: xyz = [1 -1 2; 0 2 5; 4 0 -3]; //x-y+2...

quasi 6 anni fa

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Solve the system of linear equations
4x - 2y +6z=8 2x + 8y +2z=4 6x + 10y +3z=0 Input is each coefficient of polynomial. For example, a=[4 ...

quasi 6 anni fa

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Count given word x in text.
Count how many times given word x repeats in text.

quasi 6 anni fa

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Save variables
a=[1] Save variable a that is located in workspace into current folder. File name should be 'a.mat'

quasi 6 anni fa

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Integrate Me
Given polynomial, output the integral (with k = 1 for simplicity purposes) Example: input = [2 1] % 2x+1 output = [1 1 1]...

quasi 6 anni fa

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Modified Upper Matrix Mock
Given a vector v=[1 3 6 9 11], turn it into a matrix 'ramp' like so: m=[1 3 6 9 11; 0 3 6 9 11; 0 0 6 9 11; 0 0 0 9 11; 0 0 0...

quasi 6 anni fa