BT Diameter 1&2 | global Variable

#1

Hi

I could not understand why global variable is not recommended. How can this be modified? It can also be private.

Regards

Rajan

#2

Hey @connectrajanjain If you had done some leetcode questions you would encountered that i you use a global variable then changes to it by any function will be permanent and you have to look which function made the changes. Global Variables may not be problematic for codes with few number of functions but it can be tedious to find in longer codes which function made the change. There are many more reasons why we don’t use global

#3

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