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Python program to capitalize the first and last character of each word in a string

Last Updated : 27 Sep, 2023
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Given the string, the task is to capitalize the first and last character of each word in a string. 

Examples:

Input: hello world 
Output: HellO WorlD

Input: welcome to geeksforgeeks
Output: WelcomE TO GeeksforgeekS

Approach:1

  • Access the last element using indexing.
  • Capitalize the first word using the title() method.
  • Then join each word using join() method.
  • Perform all the operations inside lambda for writing the code in one line.

Below is the implementation. 

Python3




# Python program to capitalize
# first and last character of
# each word of a String
 
 
# Function to do the same
def word_both_cap(str):
 
    # lambda function for capitalizing the
    # first and last letter of words in
    # the string
    return ' '.join(map(lambda s: s[:-1]+s[-1].upper(),
                        s.title().split()))
 
 
# Driver's code
s = "welcome to geeksforgeeks"
print("String before:", s)
print("String after:", word_both_cap(str))
 






                        










Output


String before: welcome to geeksforgeeks
String after: WelcomE TO GeeksforgeekS





There used a built-in function map( ) in place of that also we can use filter( ).Basically these are the functions which take a list or any other function and give result on it.


Time Complexity: O(n)


Auxiliary Space: O(n), where n is number of characters in string.


Approach: 2: Using slicing and upper(),split() methods




Python3














                                    




                                    

                                    




                                    




                                    

                                    

                                    
                                




















# Python program to capitalize


# first and last character of


# each word of a String


 


s = "welcome to geeksforgeeks"


print("String before:", s)


a = s.split()


res = []


for i in a:


    x = i[0].upper()+i[1:-1]+i[-1].upper()


    res.append(x)


res = " ".join(res)


print("String after:", res)



















                        







                        










Output


String before: welcome to geeksforgeeks
String after: WelcomE TO GeeksforgeekS





Time Complexity: O(n)


Auxiliary Space: O(n)


Approach: 3: Using loop + title() + split() + upper() + strip()  (Sclicing)




Python3














                                    




                                    

                                    




                                    




                                    

                                    

                                    
                                




















"""Python program to capitalize


the first character and the last character


of each word in the string"""


 


# Taking the strign input


test_str = "hello world"


 


# Without any changes in the string


print("String before:", test_str)


# Creating an empty string


string = ""


 


# Using for loop + the functions to capitalize


for i in test_str.title().split():


    string += (i[:-1] + i[-1].upper()) + ' '


     


print("String after:", string.strip())  # To remove the space at the end



















                        







                        










Output


String before: hello world
String after: HellO WorlD





Time Complexity: O(n)


Auxiliary Space: O(n), where n is number of characters in string.






                                    


                                                                        

                                        

                                            

                                                

                                                    
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                                                    hemantupadhyay2                                                

                                            

                                            

            
                                        

                                        

                                            
    

        
        
    
                                            

                                                
                                                
                                            

                                            

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