Function Swap with Mutable Parameters - Python Programming Exercise

In this exercise, you will develop a Python program with a function called "swap" to exchange the values of two integer variables, which are passed by reference. This exercise is perfect for practicing function definition, parameter passing, and variable manipulation in Python. By implementing this function, you will gain hands-on experience in handling function definitions and parameter passing in Python. This exercise not only reinforces your understanding of functions but also helps you develop efficient coding practices for managing user interactions.

 Category

Mastering Functions

 Exercise

Function Swap With Mutable Parameters

 Objective

Develop a Python program with a function called "swap" to exchange the values of two integer variables, which are passed by reference.

For example:

x = 5 y = 3 swap(x, y) print(f"x={x}, y={y}") (which should print "x=3, y=5")

 Example Python Exercise

 Copy Python Code 
# Define the function swap which swaps the values of two elements in a list
def swap(nums):
    nums[0], nums[1] = nums[1], nums[0]  # Swap the first and second elements

# Main function to test the swap function
def main():
    # Create a list with two integers (5 and 3)
    nums = [5, 3]
    
    # Call the swap function to exchange the values of the two numbers
    swap(nums)
    
    # Print the swapped values
    print(f"x={nums[0]}, y={nums[1]}")

# Call the main function to execute the program
main()

 Output

x=3, y=5

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