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Peiyi Yao


Last seen: 2 months ago Active since 2015

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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...

2 months ago

Solved


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...

2 months ago

Solved


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...

3 months ago

Solved


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

3 months ago

Solved


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. ...

3 months ago

Solved


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...

3 months ago

Solved


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

3 months ago

Solved


Sideways sum
Given natural number calculate its _population count_.

3 months ago

Solved


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.

3 months ago

Solved


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...

3 months ago

Solved


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

3 months ago

Solved


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 ...

3 months ago

Solved


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...

3 months ago

Solved


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

3 months ago

Solved


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

4 months ago

Solved


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

4 months ago

Solved


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)

4 months ago

Solved


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

4 months ago

Solved


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

4 months ago

Solved


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...

4 months ago

Solved


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 ...

4 months ago

Solved


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...

4 months ago

Solved


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

4 months ago

Solved


UICBioE240 2.8
Convert x number of hours into seconds.

4 months ago

Solved


Baseball Pitch Question
One pitcher made 10 practice pitches during his warm up before the game. Using the given information, create a vector matrix an...

4 months ago

Solved


UICBioE240 2.3
Make a 4D matrix of 4x4x3x4 containing all zeros.

4 months ago

Solved


CARDS PROBLEM
Read my mind and tell me the card number that I have now in my hands.

4 months ago

Solved


Another colon problem
This is simple problem based on problems 555, 801, 1118, etc. Create an index vector from two input vectors. Example: ...

4 months ago

Solved


Perl 4: unshift
_This is part of a series of perl function which were very helpful for many perl programmers. Could you implement it in Matlab?_...

4 months ago

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