For a given matrix A, find where the input number x appears.
Do this task by returning the vector which contains the row and the column as its element
A = [1 5 6 7]
x = 7
output = [1 4]
Demonstrates the limitations of the Test Suite, which should include more cases.
Project Euler: Problem 1, Multiples of 3 and 5
Back to basics 25 - Valid variable names
Make a run-length companion vector
Vectors counting by 2
true or false
Make an identity matrix whose diagonal elements are 1:n
Sum the rows
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