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Reverse the Words in a Sentence

Certification: Basic Level Accuracy: 63.16% Submissions: 57 Points: 10

Write a Python program that reverses the order of words in a given sentence while preserving the order of characters within each word.

Example 1
    

  • Input: sentence = "Hello World Python"
    • 

  • Output: "Python World Hello"
    • 

  • Explanation: 
      

    • Step 1: Split the input sentence into individual words.
      • 

    • Step 2: Reverse the order of the words.
      • 

    • Step 3: Join the words back together with spaces.
      • 

    • Step 4: Return the new sentence with reversed word order.
      • 

    •
Example 2
    

  • Input: sentence = "Coding is fun"
    • 

  • Output: "fun is Coding"
    • 

  • Explanation: 
      

    • Step 1: Split the input sentence into individual words ["Coding", "is", "fun"].
      • 

    • Step 2: Reverse the order of the words ["fun", "is", "Coding"].
      • 

    • Step 3: Join the words back together with spaces.
      • 

    • Step 4: Return the new sentence with reversed word order.
      • 

    •
Constraints
    

  • 0 ≤ len(sentence) ≤ 10^6
    • 

  • Words are separated by a single space
    • 

  • No leading or trailing spaces in the input
    • 

  • Time Complexity: O(n) where n is the length of the input sentence
    • 

  • Space Complexity: O(n) for storing the result
    •
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Hint
Solution

Solution Hints

    
  
  • Split the sentence into words: words = sentence.split()
    • 
  
  • Reverse the list of words: words = words[::-1]
    • 
  
  • Join the words back with spaces: result = ' '.join(words)
    •

Steps to solve by this approach:

 Step 1: Handle edge cases - empty strings or strings with only whitespace.

 Step 2: Split the input sentence into individual words using the split() method.

 Step 3: Reverse the order of words in the resulting list.

 Step 4: Join the reversed words back together with spaces.

 Step 5: Return the sentence with words in reverse order.

Submitted Code :