The program is written to swap two values. A third variable is used here to swap the two numbers. First, one number is stored in a temporary variable. Then the 2nd number is copied to the 1st number and the previously stored first number is stored in the 2nd variable and hence the values are exchanged.
If the two variables are a and b whose values are to be exchanged and the values are:
a = 5, b = 6
Then, after exchanging the values will be:
a = 6, b = 5
INPUT: Two Numbers
OUTPUT: The values after exchanging
Step 1: [Taking the inputs]
Read a, b [two numbers]
Step 2: [Swapping the two values]
Print "After swapping the values are a and b"
Step 3: Stop.
The time complexity of this program is O(1) as it requires a constant time to execute the program.
The space complexity is O(1) as it requires a constant number of memory spaces to execute the program for any given input.