|Artificial Intelligence Tutorial|
|Machine Learning Projects Tutorial||Python Video tutorial|
|Computer Graphics Video Tutorial||C++ Video Tutorial|
|Big Data Analytics Video Tutorial||Soft Computing Video Tutorial|
|Placement Video Tutorial||Java Video Tutorial|
In this program, we will learn how to swap two numbers without using a temporary variable.
Logic of the program:
First, read two numbers from the keyboard. Display the numbers before swapping. Then swap the numbers without using a temporary variable. Then display the swapped numbers.
Step 1: Read two numbers from standard input (keyboard). Say number 1 and number 2.
Step 2: Print or display original numbers (number 1 and number 2) on standard output.
Step 3: In this step we do the actual swapping of number without using temporary variable.
Let, number 1 be the first variable with value 20 and number 2 be the second variable with
Number 1 = Number 1 + Number 2
#Number 1 is 20 + 30 = 50
Number 2 = Number 1 – Number 2
#Number 2 is 50 – 30 = 20
Number 1 = Number 1 – Number 2
#Number 1 is 50 – 20 = 30
First, we add the value of the first variable to a second variable and store it in the first variable that is in number 1. Then we subtract the value of the second variable from the first variable and store the result in the second variable. Finally, we again subtract the value of the second variable from the first variable and store the result in the first variable.
Step 4: Display the swapped numbers.
Sample Input to the program:
Number 1 = 20
Number 2 = 30
Number 1 = 30
Number 2 = 20
Program to swap two numbers without using a temporary variable:
#Python program to swap numbers using temporary variable num1 = int (input ("Enter the first number: ")) num2 = int (input ("Enter the second number: ")) #Print original number print ("Before swapping") print ("First number is : ", num1) print ("The Second number is : ", num2) #Swapping without using temporary variable num1 = num1 + num2 num2 = num1 - num2 num1 = num1 - num2 #Print Swapped number print ("After swapping") print ("First number is : ", num1) print ("The Second number is : ", num2)
Enter the first number: 20
Enter the second number: 30
First number is: 30
The second number is: 20
The above programs deal with how to swap two numbers using a temporary variable. For more such programs do visit this website regularly. Also, do my Facebook page for regular updates – Click here to follow my Facebook page