Truncate Sentence

The problem is asking to truncate a given sentence so that it contains only the first k words. We can solve this problem by performing the following steps:

Approach

1. Split the Sentence: We’ll use the split method to divide the given sentence s into a list of words.

2. Take the First k Words: We’ll then take the first k words from the split list.

3. Join the Words: Finally, we’ll join these words with a space to form the truncated sentence.

Code Implementation

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class Solution:
    def truncateSentence(self, s: str, k: int) -> str:
        # Split the sentence into words
        words = s.split()

        # Take the first k words and join them with a space to form the truncated sentence
        truncated_sentence = " ".join(words[:k])

        return truncated_sentence

Key Takeaways

• This approach leverages the built-in split and join methods to easily manipulate the sentence.
• The slicing operation words[:k] is used to get the first k words, ensuring that the constraints are met.
• The code is simple, clear, and directly aligns with the problem’s requirements.