Python

Today we will write a program to swap two numbers in Python, we have two ways to do it:

1. Swap using temporary variable.
2. Swap without using temporary variable.

Program to swap two numbers in Python using temporary variable:

a = 10
b = 20
print("before swapping\na=", a, " b=", b)
temp = a
a = b
b = temp
print("\nafter swapping\na=", a, " b=", b)

OUTPUT:

before swapping
a= 10 b= 20
after swapping
a= 20 b= 10

Program to swap two numbers in Python without using temporary variable:

Method 1:

Python provides a way to directly swap two number without temporary variable. It can be done in following way.

a, b = b, a

Method 2:

In this method we can use addition and subtraction operators.

a = a + b
b = a - b
a = a - b

Method 3:

We can also swap numbers using multiplication and division operator in following way.

a = a * b
b = a / b
a = a / b
This method will not work when one of the number is 0.

Method 4:

It is another method in which we use bitwise xor operator.

a = a ^ b
b = a ^ b
a = a ^ b

Comment below for any help.

Today we are going the write one of the simplest program in Python to find largest among three numbers.

Here, we will input three numbers and our program will find the largest of them all.

Program to find largest among three numbers in Python:

print("enter three numbers:")
a = int(input())
b = int(input())
c = int(input())
if a>b and a>c:
    print(a, " is largest")
elif b>a and b>c:
    print(b, " is largest")
else:
    print(c, " is largest")

OUTPUT:

enter three numbers:
9
2
12
12 is largest

That’s our quick program, need help then comment below.