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Back to basics 22 - Rotate a matrix
Covering some basic topics I haven't seen elsewhere on Cody. Rotate the input matrix 90 degrees counterclockwise (e.g. [1 2; ...
quasi 11 anni fa
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Duplicate each element of a vector.
for an n-dimensional vector x, the function should return another vector 2n-dimension which each element is repeated twice. Ex...
quasi 11 anni fa
Risposto
non-linear optimization over a frequency bandwidth
I think you can do exactly what you said: maximize the average voltage output. Use fmincon, but write an objective function t...
non-linear optimization over a frequency bandwidth
I think you can do exactly what you said: maximize the average voltage output. Use fmincon, but write an objective function t...
quasi 11 anni fa | 0
Risposto
Is numeric gradient estimation well-posed
It will depend a great deal on the characteristics of your function. If your function is smooth, then you can generally expect g...
Is numeric gradient estimation well-posed
It will depend a great deal on the characteristics of your function. If your function is smooth, then you can generally expect g...
quasi 11 anni fa | 0
Risposto
How can I set transparency in 2D plot?
I don't think there's a way to make markers transparent. However, you could plot each data point as a small circle (using patch)...
How can I set transparency in 2D plot?
I don't think there's a way to make markers transparent. However, you could plot each data point as a small circle (using patch)...
quasi 11 anni fa | 2
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Magic!
Check whether the input matrix is a normal magic square: <http://en.wikipedia.org/wiki/Magic_square> Output the logical va...
quasi 11 anni fa
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Count photos
Given n people, everyone must have pictures taken with everyone, each photo includes only two persons, please count the total nu...
quasi 11 anni fa
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Who knows the last digit of pi?
There is only one man who knows the last digit of pi, who is that man? Give the name of that man, who, by popular believe, can ...
quasi 11 anni fa
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Return elements unique to either input
Given two numeric inputs a and b, return a row vector that contains the numbers found in only a or only b, but not both. For ex...
quasi 11 anni fa
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Set the array elements whose value is 13 to 0
Input A either an array or a vector (which can be empty) Output B will be the same size as A . All elements of A equal to 13...
quasi 11 anni fa
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Create a square matrix of multiples
Given an input, N, output a matrix N x N with each row containing multiples of the first element of each row. This also applies...
quasi 11 anni fa
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Whether the input is vector?
Given the input x, return 1 if x is vector or else 0.
quasi 11 anni fa
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Generate a vector like 1,2,2,3,3,3,4,4,4,4
Generate a vector like 1,2,2,3,3,3,4,4,4,4 So if n = 3, then return [1 2 2 3 3 3] And if n = 5, then return [1 2 2...
quasi 11 anni fa
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Make a 1 hot vector
Make a vector of length _N_ that consists of all zeros except at index _k_, where it has the value 1. Example: Input ...
quasi 11 anni fa
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Back to basics 1 - Saving
Covering some basic topics I haven't seen elsewhere on Cody. Given an input variable 'x', save it to disk in a file named 'co...
quasi 11 anni fa
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Getting the indices from a vector
This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to <http://www.mathworks....
quasi 11 anni fa
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Rotate a Matrix by 90 degrees
Rotate a Matrix by 90 degrees Example: If the input is: X = 1 2 3 4 5 6 7 8 9 ...
quasi 11 anni fa
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Compute a dot product of two vectors x and y
x and y are input vectors, d is a number and contains their dot product
quasi 11 anni fa
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Back to basics 12 - Input Arguments
Covering some basic topics I haven't seen elsewhere on Cody. Return a value equal to the number of input arguments to the fun...
quasi 11 anni fa
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Get the length of a given vector
Given a vector x, the output y should equal the length of x.
quasi 11 anni fa
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Back to basics 14 - Keywords
Covering some basic topics I haven't seen elsewhere on Cody. Return a cell array of all MATLAB keywords
quasi 11 anni fa
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Determine Whether an array is empty
Input a matrix x, output y is TRUE if x is empty, otherwise FALSE.
quasi 11 anni fa
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Project Euler: Problem 10, Sum of Primes
The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17. Find the sum of all the primes below the input, N. Thank you <http:/...
quasi 11 anni fa
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Back to basics 11 - Max Integer
Covering some basic topics I haven't seen elsewhere on Cody. Return the largest positive integer MATLAB can handle.
quasi 11 anni fa
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Check if number exists in vector
Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...
quasi 11 anni fa
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Vectorize the digits of an Integer
Create a vector of length N for an integer of N digits. x=123045; x_vec=[1 2 3 0 4 5]; I happened upon a trick to do ...
quasi 11 anni fa
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Multielement indexing of a row array
The row array birthRateChina stores the China birth rate (per 1000 people) for years 2000 to 2012. Write a statement that create...
quasi 11 anni fa