I finally understood your problem. The problem description needs some adjustment. It is not clear that it is requesting only the global variable named 'z'. I thought it was referring to every global variable.
Find the two most distant points
Project Euler: Problem 2, Sum of even Fibonacci
First non-zero element in each column
Multiply a column by a row
Is the paranthesis sequence balanced ?
Anyone for tennis? Your chances of winning a (standard) game
Arrange the names in alphabetical order (2)
Arrange the names in alphabetical order (1)
Comparison of floating-point numbers (singles)
The twelve days of Christmas
Find the treasures in MATLAB Central and discover how the community can help you!
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office