Package g0901_1000.s0966_vowel_spellchecker

Class Solution

java.lang.Object
g0901_1000.s0966_vowel_spellchecker.Solution
public class Solution extends Object
966 - Vowel Spellchecker.<p>Medium</p> <p>Given a <code>wordlist</code>, we want to implement a spellchecker that converts a query word into a correct word.</p> <p>For a given <code>query</code> word, the spell checker handles two categories of spelling mistakes:</p> <ul> <li>Capitalization: If the query matches a word in the wordlist ( <strong>case-insensitive</strong> ), then the query word is returned with the same case as the case in the wordlist. <ul> <li>Example: <code>wordlist = [&quot;yellow&quot;]</code>, <code>query = &quot;YellOw&quot;</code>: <code>correct = &quot;yellow&quot;</code></li> <li>Example: <code>wordlist = [&quot;Yellow&quot;]</code>, <code>query = &quot;yellow&quot;</code>: <code>correct = &quot;Yellow&quot;</code></li> <li>Example: <code>wordlist = [&quot;yellow&quot;]</code>, <code>query = &quot;yellow&quot;</code>: <code>correct = &quot;yellow&quot;</code></li> </ul> </li> <li>Vowel Errors: If after replacing the vowels <code>('a', 'e', 'i', 'o', 'u')</code> of the query word with any vowel individually, it matches a word in the wordlist ( <strong>case-insensitive</strong> ), then the query word is returned with the same case as the match in the wordlist. <ul> <li>Example: <code>wordlist = [&quot;YellOw&quot;]</code>, <code>query = &quot;yollow&quot;</code>: <code>correct = &quot;YellOw&quot;</code></li> <li>Example: <code>wordlist = [&quot;YellOw&quot;]</code>, <code>query = &quot;yeellow&quot;</code>: <code>correct = &quot;&quot;</code> (no match)</li> <li>Example: <code>wordlist = [&quot;YellOw&quot;]</code>, <code>query = &quot;yllw&quot;</code>: <code>correct = &quot;&quot;</code> (no match)</li> </ul> </li> </ul> <p>In addition, the spell checker operates under the following precedence rules:</p> <ul> <li>When the query exactly matches a word in the wordlist ( <strong>case-sensitive</strong> ), you should return the same word back.</li> <li>When the query matches a word up to capitlization, you should return the first such match in the wordlist.</li> <li>When the query matches a word up to vowel errors, you should return the first such match in the wordlist.</li> <li>If the query has no matches in the wordlist, you should return the empty string.</li> </ul> <p>Given some <code>queries</code>, return a list of words <code>answer</code>, where <code>answer[i]</code> is the correct word for <code>query = queries[i]</code>.</p> <p><strong>Example 1:</strong></p> <p><strong>Input:</strong> wordlist = [&ldquo;KiTe&rdquo;,&ldquo;kite&rdquo;,&ldquo;hare&rdquo;,&ldquo;Hare&rdquo;], queries = [&ldquo;kite&rdquo;,&ldquo;Kite&rdquo;,&ldquo;KiTe&rdquo;,&ldquo;Hare&rdquo;,&ldquo;HARE&rdquo;,&ldquo;Hear&rdquo;,&ldquo;hear&rdquo;,&ldquo;keti&rdquo;,&ldquo;keet&rdquo;,&ldquo;keto&rdquo;]</p> <p><strong>Output:</strong> [&ldquo;kite&rdquo;,&ldquo;KiTe&rdquo;,&ldquo;KiTe&rdquo;,&ldquo;Hare&rdquo;,&ldquo;hare&rdquo;,&ldquo;&ldquo;,&rdquo;&rdquo;,&ldquo;KiTe&rdquo;,&quot;&quot;,&ldquo;KiTe&rdquo;]</p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> wordlist = [&ldquo;yellow&rdquo;], queries = [&ldquo;YellOw&rdquo;]</p> <p><strong>Output:</strong> [&ldquo;yellow&rdquo;]</p> <p><strong>Constraints:</strong></p> <ul> <li><code>1 <= wordlist.length, queries.length <= 5000</code></li> <li><code>1 <= wordlist[i].length, queries[i].length <= 7</code></li> <li><code>wordlist[i]</code> and <code>queries[i]</code> consist only of only English letters.</li> </ul>

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