Class Solution
java.lang.Object
g2501_2600.s2559_count_vowel_strings_in_ranges.Solution
2559 - Count Vowel Strings in Ranges.<p>Medium</p>
<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>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>
<p><strong>Note</strong> that the vowel letters are <code>'a'</code>, <code>'e'</code>, <code>'i'</code>, <code>'o'</code>, and <code>'u'</code>.</p>
<p><strong>Example 1:</strong></p>
<p><strong>Input:</strong> words = [“aba”,“bcb”,“ece”,“aa”,“e”], queries = [[0,2],[1,4],[1,1]]</p>
<p><strong>Output:</strong> [2,3,0]</p>
<p><strong>Explanation:</strong> The strings starting and ending with a vowel are “aba”, “ece”, “aa” and “e”.</p>
<p>The answer to the query [0,2] is 2 (strings “aba” and “ece”).</p>
<p>to query [1,4] is 3 (strings “ece”, “aa”, “e”).</p>
<p>to query [1,1] is 0.</p>
<p>We return [2,3,0].</p>
<p><strong>Example 2:</strong></p>
<p><strong>Input:</strong> words = [“a”,“e”,“i”], queries = [[0,2],[0,1],[2,2]]</p>
<p><strong>Output:</strong> [3,2,1]</p>
<p><strong>Explanation:</strong> Every string satisfies the conditions, so we return [3,2,1].</p>
<p><strong>Constraints:</strong></p>
<ul>
<li><code>1 <= words.length <= 10<sup>5</sup></code></li>
<li><code>1 <= words[i].length <= 40</code></li>
<li><code>words[i]</code> consists only of lowercase English letters.</li>
<li><code>sum(words[i].length) <= 3 * 10<sup>5</sup></code></li>
<li><code>1 <= queries.length <= 10<sup>5</sup></code></li>
<li><code>0 <= l<sub>i</sub> <= r<sub>i</sub> < words.length</code></li>
</ul>
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Solution
public Solution()
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Method Details
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vowelStrings
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