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2025-09-29 14:43:44 +08:00
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leetcode-cn/problem (English)/统计范围内的元音字符串数(English) [count-vowel-strings-in-ranges].html
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<p>You are given a <strong>0-indexed</strong> array of strings <code>words</code> and a 2D array of integers <code>queries</code>.</p>
<p>Each query <code>queries[i] = [l<sub>i</sub>, r<sub>i</sub>]</code> asks us to find the number of strings present in the range <code>l<sub>i</sub></code> to <code>r<sub>i</sub></code> (both <strong>inclusive</strong>) of <code>words</code> that start and end with a vowel.</p>
<p>Each query <code>queries[i] = [l<sub>i</sub>, r<sub>i</sub>]</code> asks us to find the number of strings present at the indices ranging from <code>l<sub>i</sub></code> to <code>r<sub>i</sub></code> (both <strong>inclusive</strong>) of <code>words</code> that start and end with a vowel.</p>
<p>Return <em>an array </em><code>ans</code><em> of size </em><code>queries.length</code><em>, where </em><code>ans[i]</code><em> is the answer to the </em><code>i</code><sup>th</sup><em> query</em>.</p>