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David Verrelli


Last seen: 約1ヶ月 前 2015 以来アクティブ

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

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  • Cody5 Easy Master

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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. ...

約2ヶ月 前

解決済み


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...

約2ヶ月 前

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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...

2ヶ月 前

問題


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...

2ヶ月 前 | 1 | 3 個のソルバー

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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/...

2年以上 前

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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...

3年弱 前

問題


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/...

約3年 前 | 1 | 8 個のソルバー

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

約3年 前

解決済み


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

約3年 前

解決済み


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...

約3年 前

解決済み


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...

約3年 前

解決済み


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 ...

約3年 前

解決済み


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) ...

約3年 前

解決済み


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'.

約3年 前

解決済み


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

約3年 前

解決済み


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...

約3年 前

解決済み


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...

約3年 前

解決済み


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

約3年 前

解決済み


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.

約3年 前

解決済み


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

約3年 前

解決済み


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)

約3年 前

解決済み


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...

約3年 前

解決済み


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...

約3年 前

解決済み


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...

約3年 前

解決済み


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 ...

約3年 前

解決済み


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

約3年 前

解決済み


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

約3年 前

解決済み


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

約3年 前

解決済み


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...

約3年 前

解決済み


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...

約3年 前

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