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# Friedrich

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Last seen: 8ヶ月 前 2014 以来アクティブ

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Reading raw image file of unknown size
If you make some assumptions about the image, there is a way to find the height and width. 1. Image is all grayscale uint8 ...

Faster base2dec Function
This is a fast replacement for base2dec. It has the same syntax as base2dec and does not require compiling.

Faster dec2base Function
This is a fast replacement for dec2base. It has the same syntax as dec2base and does not require compiling.

mfft
This code is designed to help learn and understand the fast fourier algorithm. For this purpose it is kept as short and simple a...

initialize a MxN matrix with the same number
I know this is old but I could not let it go. I found A=zeros(M,N)+10; to be the fastest. At least on my computer. Heres...

Matlab FFT vs MEX FFTW
The difference in speed might be caused by your inputs being rational and not complex. In this case Matlab calls the fft for rea...

3年以上 前 | 0

Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

6年弱 前

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

6年弱 前

Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

7年弱 前

Is my wife right?
Regardless of input, output the string 'yes'.

7年弱 前

Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

7年弱 前

Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

7年弱 前

Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

7年弱 前

Given a and b, return the sum a+b in c.

7年弱 前

Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

7年弱 前

Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

7年弱 前

Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

7年弱 前