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41 lines
1.9 KiB
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<p>Given a <code>sentence</code> that consists of some words separated by a <strong>single space</strong>, and a <code>searchWord</code>, check if <code>searchWord</code> is a prefix of any word in <code>sentence</code>.</p>
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<p>Return <em>the index of the word in </em><code>sentence</code><em> (<strong>1-indexed</strong>) where </em><code>searchWord</code><em> is a prefix of this word</em>. If <code>searchWord</code> is a prefix of more than one word, return the index of the first word <strong>(minimum index)</strong>. If there is no such word return <code>-1</code>.</p>
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<p>A <strong>prefix</strong> of a string <code>s</code> is any leading contiguous substring of <code>s</code>.</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> sentence = "i love eating burger", searchWord = "burg"
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<strong>Output:</strong> 4
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<strong>Explanation:</strong> "burg" is prefix of "burger" which is the 4th word in the sentence.
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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> sentence = "this problem is an easy problem", searchWord = "pro"
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<strong>Output:</strong> 2
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<strong>Explanation:</strong> "pro" is prefix of "problem" which is the 2nd and the 6th word in the sentence, but we return 2 as it's the minimal index.
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</pre>
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<p><strong>Example 3:</strong></p>
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<pre>
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<strong>Input:</strong> sentence = "i am tired", searchWord = "you"
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<strong>Output:</strong> -1
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<strong>Explanation:</strong> "you" is not a prefix of any word in the sentence.
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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 <= sentence.length <= 100</code></li>
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<li><code>1 <= searchWord.length <= 10</code></li>
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<li><code>sentence</code> consists of lowercase English letters and spaces.</li>
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<li><code>searchWord</code> consists of lowercase English letters.</li>
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</ul>
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