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David Verrelli


Last seen: 6달 전 2015 이후 활성

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

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해결됨


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. ...

6달 전

해결됨


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...

6달 전

해결됨


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...

6달 전

문제


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...

6달 전 | 1 | 솔버 수: 3

해결됨


What score did they give?
Your task in this problem is to figure out the most recent score, |S|, submitted. <<https://upload.wikimedia.org/wikipedia/...

2년 이상 전

해결됨


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...

약 3년 전

문제


What score did they give?
Your task in this problem is to figure out the most recent score, |S|, submitted. <<https://upload.wikimedia.org/wikipedia/...

3년 이상 전 | 1 | 솔버 수: 8

해결됨


Create tangent function out of sin and cos
Please don't use tan(x) directly

3년 이상 전

해결됨


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

3년 이상 전

해결됨


Persistence will not help you solve this problem.
Create a function without inputs that adds one to the output every time it is called. A different possibility of solving this ha...

3년 이상 전

해결됨


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...

3년 이상 전

해결됨


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 ...

3년 이상 전

해결됨


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) ...

3년 이상 전

해결됨


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'.

3년 이상 전

해결됨


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

3년 이상 전

해결됨


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...

3년 이상 전

해결됨


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...

3년 이상 전

해결됨


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

3년 이상 전

해결됨


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

3년 이상 전

해결됨


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

3년 이상 전

해결됨


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)

3년 이상 전

해결됨


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...

3년 이상 전

해결됨


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...

3년 이상 전

해결됨


Refresh your system of equations
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...

3년 이상 전

해결됨


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 ...

3년 이상 전

해결됨


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

3년 이상 전

해결됨


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

3년 이상 전

해결됨


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

3년 이상 전

해결됨


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...

3년 이상 전

해결됨


Linear Least Squares (L2 fitting problem )
Given a set of real measurements (x(i), y(i)) find a line sol(1)x + sol(2) (more specifically furnish the vector with...

3년 이상 전

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