Peiyi Yao

Last seen: ongeveer een jaar ago | Active since 2015

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Area of a disk
Find the area of a disk or circle. x= radius of the disk.

meer dan een jaar ago

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persistant sum
There will be 9 tests for this problem. In each test you will be provided with 2 integers n=[n1,n2], where n2 is equal to t...

meer dan een jaar ago

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Air Mass to Star for an Observer at Mean Sea Level
Air mass is a measure of how much atmosphere light from a source above the atmosphere (eg sun, planet, star) has to travel throu...

meer dan een jaar ago

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Predict Cricket Stridulation Rate from Air Temperature
Stridulation is the process that creates a cricket's “chirp” by rubbing their wings or legs. According to the Old Farmer's Alma...

meer dan een jaar ago

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Find Air Temperature from Cricket Stridulation Rate
Stridulation is the process that creates a cricket's “chirp” by rubbing their wings or legs. According to the Old Farmer's Alma...

meer dan een jaar ago

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Create a recurrence matrix for a vector of data
In <https://en.wikipedia.org/wiki/Conversation_analysis conversation analysis>, it's often useful to track the contributions fro...

bijna 2 jaar ago

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Average valid values of arrays
Given a 1D array (column or row vector), compute the average of valid values. Valid values are defined via two thresholds: minVa...

bijna 2 jaar ago

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Next Lower Power of B
Given a number _n_ and a base _B_ greater than 1, return the lowest integer power of _B_ that is less than or equal to _n_. E...

ongeveer 2 jaar ago

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Convert from integer to binary
if true % decimalToBinaryVector(x) end

ongeveer 2 jaar ago

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Find elements of set A those are not in set B
Given two sets of data A and B. Find elements of A those are not in set B. ...

ongeveer 2 jaar ago

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What's the missing interior angle?
I'm talking about polygons... The sum of the interior angles of a triangle is 180 degrees. The sum of the interior angles of a...

ongeveer 2 jaar ago

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Can you reshape the matrix?
Given a matrix A, is it possible to reshape it into another matrix with the given number of rows?

ongeveer 2 jaar ago

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Sideways sum
Given natural number calculate its _population count_.

ongeveer 2 jaar ago

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Find the diagonal of the square of side L
You are given a square of side length L, find D the length of its diagonal.

ongeveer 2 jaar ago

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Find offset of given matrix element from first matrix element
Given matrix m and an element of that matrix, return the offset from its first element. e.g. m=[11 2 34; 40 51 6; 87 8 109] el...

ongeveer 2 jaar ago

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Number of vertices of a hypercube
Return the number of vertices of a n-dimensional hypercube.

ongeveer 2 jaar ago

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index of n^2 in magic(n)
input=5 magic matrix 17 24 1 8 15 23 5 7 14 16 4 6 13 20 22 10 ...

ongeveer 2 jaar ago

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Find the biggest empty box
You are given a matrix that contains only ones and zeros. Think of the ones as columns in an otherwise empty floor plan. You wan...

ongeveer 2 jaar ago

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Generate a Parasitic Number
This problem is the next step up from <http://www.mathworks.com/matlabcentral/cody/problems/156-parasitic-numbers Problem 156>. ...

ongeveer 2 jaar ago

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UICBioE240 2.10
Given a vector of numbers, give the difference between the maximum and minimum values.

ongeveer 2 jaar ago

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UICBioE240 2.2
Make a 3x4 matrix that contains all ones.

ongeveer 2 jaar ago

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UICBioE240 problem 1.6
Find the tangent line of a right triangle given the two of the sides. So if A = [1 1] B = sqrt(2)

ongeveer 2 jaar ago

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UICBioE240 problem 1.4
So if A = [ 1 2 3; 4 5 6; 7 8 9] B = [ 3 3]

ongeveer 2 jaar ago

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UICBioE240 problem 1.3
Find the length of a vector. So if A = [1 1 1 1 1] Then B = 5

ongeveer 2 jaar ago

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UICBioE240 problem 1.11
Store a series of numbers into a 4 by 4 matrix, starting with the first few positions going right and down, and leaving the rest...

ongeveer 2 jaar ago

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My Problem, Find the square of the horizontal concatenation of the third and fifth elements of a vector.
given the 1x5 vector x, y must be the square of the horizontal concatenation of the third and fifth elements. So, if x = [1 1 1 ...

ongeveer 2 jaar ago

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UICBioE240 problem 1.12
The mathematical quantities e^x, ln x, and log x are calculated in Matlab using the expressions exp(x), log(x), and log10(x), re...

ongeveer 2 jaar ago

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Matlab Basics II - Determine if an array has a 3rd dimension
For an array A, determine whether it has 3 dimensions, return 0 if x is only 2D, and 1 if x is 3D

ongeveer 2 jaar ago

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square a vector-Given the variable x as your input, square it and put the result in y.
function y = (x)squared y = x; end

ongeveer 2 jaar ago

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UICBioE240 2.8
Convert x number of hours into seconds.

ongeveer 2 jaar ago