Solution Exercise 40: Python program to swap the first and the last word in a string

Exercise 40 

Write a Python program that allows you to swap the first and the last word. Example if s = "Python is a programming language", the program returns the string s2 = "programming is a Python language"

Solution:

def swapWord(s):
    # converting the string s to a python list
    L = s.split()
    n = len(L)
    # getting the first and the last word
    first = L[0]
    last = L[n-1]
    # create a substring s1 by deleting the the first and last word
    s1 = " "
    for i in range(1,n-1):
        s1 = s1 + L[i] + " "
    # swapping the first and the last word
    s2 = last + s1 + first
    return s2
s = "Python is a programming language"
print("The string obteined by swaping the the first and the last word is :n", swapWord(s))