Write a function that returns that number of rows in a vector or matrix x
x = [1; 2; 3]
output = 3
Swap the first and last columns
Bottles of beer
The Answer to Life, the Universe, and Everything
2倍してみよう - ここからスタート！
Matlab Basics II - Extract last 3 elements of a vector
Matlab Basics II - squares
Matlab Basics - Create a row vector
Matlab Basics - Switching Assignments
Matlab Basics - Set unwanted parts of a vector to zero
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