Q. Python program to swap two numbers without using temporary variable.
Here you will find an algorithm and program in Python programming language to swap 2 numbers without using any third or temporary variable.
Swapping two number : Swap two numbers means exchange the values of two variables with each other. Suppose we are given 2 numbers num1 = 10 and num2 = 20 and we have to swap these 2 numbers without using third variable. After swaping value of num1 = 20 and num2 = 10.
Algorithm to swap two numbers without using third variable
START Step 1 -> Take two integer as input num1 and num2. Step 2 -> Print number before swapping Step 3 -> num1 = num1 + num2; Step 4 -> num2 = num1 - num2; Step 5 -> num1 = num1 - num2; Step 6 -> Print numbers after swapping STOP
Python Program to Swap Two Numbers Without Using Temporary Variable
print('Enter Two Numbers :') num1 = int(input()) num2 = int(input()) print("Number before swapping is ",num1," and ",num2) num1 = num1 + num2; num2 = num1 - num2; num1 = num1 - num2; print("Number after swapping is ",num1," and ",num2)
Enter Two Numbers : 10 15 Number before swapping is 10 and 15 Number after swapping is 15 and 10