元音拼写检查器

/*
题目思路：
1. 使用流式操作处理数据。
2. 创建一个直接匹配的Set和两个用于不区分大小写匹配和元音错误匹配的Map。
3. 对每个查询进行流式处理，按照优先级返回结果。
*/
import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class SpellCheckerStream {
    private Set<String> wordSet;
    private Map<String, String> caseInsensitiveMap;
    private Map<String, String> vowelErrorMap;
    private static final String VOWELS = "aeiou";

    public SpellCheckerStream(String[] wordlist) {
        wordSet = Stream.of(wordlist).collect(Collectors.toSet());
        caseInsensitiveMap = Stream.of(wordlist).collect(Collectors.toMap(String::toLowerCase, word -> word, (a, b) -> a));
        vowelErrorMap = Stream.of(wordlist).collect(Collectors.toMap(word -> deVowel(word.toLowerCase()), word -> word, (a, b) -> a));
    }

    public String[] spellcheck(String[] queries) {
        return Stream.of(queries)
                .map(this::correctWord)
                .toArray(String[]::new);
    }

    private String correctWord(String query) {
        if (wordSet.contains(query)) {
            return query;
        }
        String lowerQuery = query.toLowerCase();
        if (caseInsensitiveMap.containsKey(lowerQuery)) {
            return caseInsensitiveMap.get(lowerQuery);
        }
        String deVowelQuery = deVowel(lowerQuery);
        return vowelErrorMap.getOrDefault(deVowelQuery, "");
    }

    private String deVowel(String word) {
        return word.replaceAll("[aeiou]", "*");
    }

    public static void main(String[] args) {
        String[] wordlist = {"KiTe","kite","hare","Hare"};
        String[] queries = {"kite","Kite","KiTe","Hare","HARE","Hear","hear","keti","keet","keto"};
        SpellCheckerStream checker = new SpellCheckerStream(wordlist);
        System.out.println(Arrays.toString(checker.spellcheck(queries)));
    }
}