Write a function that takes matrix A, and squares each element in the matrix
A = [1 2 3]
output = [1 4 9]
Increment a number, given its digits
Rotate a Matrix by 90 degrees
How many trades represent all the profit?
Test if two numbers have the same digits
Replace multiples of 5 with NaN
Matlab Basics - Logical Tests I
Matlab Basics - y as a function of x
Matlab Basics - Convert a row vector to a column vector
Replace every 3rd element in a vector with 4
Matlab Basics II - Find the roots of a function
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