There are many kinds of approaches or systems to Swap two varribles :)
As we know that a problem can be sloved in different ways, right?


Basically, we will see three different approaches to Swap two Varribles

Those are:
  1. Using Temp (Legit Approach)
    2.
  2. Mathmatical Apporach
    3.
  3. Using Systematical Varrible
    4.


Using Temp Var 
    a = 7
    b = 4
    print(a, b)
    
    temp = a
    a = b
    b = temp
    
    print(a, b)		# and that's all, varrible has been swapped


Mathmatical Apporach 

a = 9
b = 4		# remember it's only applicable
			# when both varribles are numeric
			# like (int, float)
a = (a + b)

b = a - b
a = a - b

# and it's done !


Using Using Systematical Varrible 


a = 12
b = 5

a, b = b, a 

# and doen, but sounds wired :(


So, that's all, but the first Apporach is legit