Getting the indices from a vector
This is a basic MATLAB operation. It is for instructional purposes.
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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,...
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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...
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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 = ...
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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];
...
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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]
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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...
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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.
<<http://upload....
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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...
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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...
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Find common elements in matrix rows
Given a matrix, find all elements that exist in every row.
For example, given
A =
1 2 3 5
9 2 5 9
3 2 5 9
...
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...
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