Community Profile # Torsten K

Last seen: mer än ett år ago Active since 2020

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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,...

mer än ett år ago

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Swap the input arguments
Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...

mer än ett år ago

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Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

mer än ett år ago

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Length of the hypotenuse
Given short sides of lengths a and b, calculate the length c of the hypotenuse of the right-angled triangle. <<https://i.imgu...

mer än ett år ago

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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...

mer än ett år ago

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Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

mer än ett år ago

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Return area of square
Side of square=input=a Area=output=b

mer än ett år ago

NARX with multiple time series: Data dividision problem
OK, I found the solution. Here is a small example, based on this example: load magmulseq; y_mul = catsamples(y1,y2,y3,y1,y2...

nästan 2 år ago | 0

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basic error, help me
Is this what you are looking for? clearvars; x = linspace(20,100000); y = 20*log10(1./(1+(2*3.14*x*985.1*(59*10.^-9)-(985....

nästan 2 år ago | 0

how to save an array in each iteration?
Here a variant with a 3d-matrix: clearvars; A = zeros(6,6,3) L = 3; SR = [ 0.0941 0.1129 0.0471 0 ...

nästan 2 år ago | 0

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how to save an array in each iteration?
Maybe a cell-array is what you are looking for? A = cell(3,1); L = 3; SR = [ 0.0941 0.1129 0.0471 0 ...

nästan 2 år ago | 0

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Pascal's Triangle
Given an integer n >= 0, generate the length n+1 row vector representing the n-th row of <http://en.wikipedia.org/wiki/Pascals_t...

nästan 2 år ago

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Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

nästan 2 år ago

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Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

nästan 2 år ago

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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...

nästan 2 år ago

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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

nästan 2 år ago

Question

NARX with multiple time series: Data dividision problem
Hello everyone, I want to train a NARX-model for multi-step prediction of time series. The task has the following boundary cond...

nästan 2 år ago | 1 answer | 0

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Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

nästan 2 år ago

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

nästan 2 år ago

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

nästan 2 år ago

How can I change all the elements in a matrix with value1 to a new value2?
How about this? m = randi([0,1],78) % 78x78 matrix with random integers in the interval 0..1 m(m==0)=-1 % Substitute all 0's b...

nästan 2 år ago | 0

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

nästan 2 år ago

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

nästan 2 år ago

Question

Heatmap: Vector of x values ​​contains duplicate values
Hello everybody, I would like to create a heatmap in which the X-Labels are repeated. The X-Label categories are the strings "L...

nästan 2 år ago | 1 answer | 0

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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]; ...

ungefär 2 år ago

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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...

ungefär 2 år ago

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Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

ungefär 2 år ago

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Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

ungefär 2 år ago

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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 ...

ungefär 2 år ago

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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...

ungefär 2 år ago