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 neveropen
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 samedef 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 codes = "welcome to neveropen"print("String before:", s)print("String after:", word_both_cap(str)) |
Output
String before: welcome to neveropen 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 Strings = "welcome to neveropen"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 neveropen 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 capitalizethe first character and the last characterof each word in the string"""# Taking the strign inputtest_str = "hello world"# Without any changes in the stringprint("String before:", test_str)# Creating an empty stringstring = ""# Using for loop + the functions to capitalizefor 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.
