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48 lines
2.3 KiB
HTML
48 lines
2.3 KiB
HTML
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<p>A <strong>sentence</strong> is a list of words that are separated by a single space with no leading or trailing spaces. Each of the words consists of <strong>only</strong> uppercase and lowercase English letters (no punctuation).</p>
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<ul>
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<li>For example, <code>"Hello World"</code>, <code>"HELLO"</code>, and <code>"hello world hello world"</code> are all sentences.</li>
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</ul>
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<p>You are given a sentence <code>s</code> and an integer <code>k</code>. You want to <strong>truncate</strong> <code>s</code> such that it contains only the <strong>first</strong> <code>k</code> words. Return <code>s</code><em> after <strong>truncating</strong> it.</em></p>
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<p> </p>
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<p><strong>Example 1:</strong></p>
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<pre>
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<strong>Input:</strong> s = "Hello how are you Contestant", k = 4
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<strong>Output:</strong> "Hello how are you"
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<strong>Explanation:</strong>
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The words in s are ["Hello", "how" "are", "you", "Contestant"].
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The first 4 words are ["Hello", "how", "are", "you"].
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Hence, you should return "Hello how are you".
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</pre>
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<p><strong>Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> s = "What is the solution to this problem", k = 4
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<strong>Output:</strong> "What is the solution"
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<strong>Explanation:</strong>
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The words in s are ["What", "is" "the", "solution", "to", "this", "problem"].
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The first 4 words are ["What", "is", "the", "solution"].
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Hence, you should return "What is the solution".</pre>
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<p><strong>Example 3:</strong></p>
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<pre>
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<strong>Input:</strong> s = "chopper is not a tanuki", k = 5
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<strong>Output:</strong> "chopper is not a tanuki"
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</pre>
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<p> </p>
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<p><strong>Constraints:</strong></p>
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<ul>
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<li><code>1 <= s.length <= 500</code></li>
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<li><code>k</code> is in the range <code>[1, the number of words in s]</code>.</li>
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<li><code>s</code> consist of only lowercase and uppercase English letters and spaces.</li>
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<li>The words in <code>s</code> are separated by a single space.</li>
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<li>There are no leading or trailing spaces.</li>
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</ul>
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