Write a function that returns that number of rows in a vector or matrix x
x = [1; 2; 3]
output = 3
Test for balanced parentheses
Number of 1s in a binary string
Multiply 2 numbers
Basic arrays operations.
Is it a number?
Matlab Basics II - Max & Index of Max
Matlab Basics - Switching Assignments
Matlab Basics - Logical Tests I
Finding an element in a vector
Matlab Basics II - Operations and Matrix Dimensions
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