In this tutorial you will learn swapping of two numbers using third variable Python in programming language.
This is also a most important program which commonly asked in interview.
Before directly moving on writing the program lets understand what is our aim to achieve in this program.
Basically Swapping of number means
Suppose variable a has assigned value is 2 and the variable b has assigned value 4 then in swapping operation we will exchange the value and assign value of a i.e 2 in b and the value of b i.e. 4 in variable a.
How our program will behave?
As we already seen above that what we have to achieve in the program.
In the swapping program without using third variable we will assign two different value to the different variables.
For example: a=2 and b=4
Now after execution of the program our output should like
a=4 and b = 2
Swapping of two numbers using third variable in Python language
a = int(input("please give first number a: "))
b = int(input("please give second number b: "))
tempvar=a
a=b
b=tempvar
print("After swapping")
print("value of a is : ", a);
print("value of b is : ", b); Output:
please give first number a: 5
please give second number b: 7
After swapping
value of a is : 7
value of b is : 5