Package g0901_1000.s0966_vowel_spellchecker

Class Solution

java.lang.Object
g0901_1000.s0966_vowel_spellchecker.Solution
public class Solution extends java.lang.Object
966 - Vowel Spellchecker.

Medium

Given a wordlist, we want to implement a spellchecker that converts a query word into a correct word.

For a given query word, the spell checker handles two categories of spelling mistakes:

  • Capitalization: If the query matches a word in the wordlist ( case-insensitive ), then the query word is returned with the same case as the case in the wordlist.
    • Example: wordlist = ["yellow"], query = "YellOw": correct = "yellow"
    • Example: wordlist = ["Yellow"], query = "yellow": correct = "Yellow"
    • Example: wordlist = ["yellow"], query = "yellow": correct = "yellow"
  • Vowel Errors: If after replacing the vowels ('a', 'e', 'i', 'o', 'u') of the query word with any vowel individually, it matches a word in the wordlist ( case-insensitive ), then the query word is returned with the same case as the match in the wordlist.
    • Example: wordlist = ["YellOw"], query = "yollow": correct = "YellOw"
    • Example: wordlist = ["YellOw"], query = "yeellow": correct = "" (no match)
    • Example: wordlist = ["YellOw"], query = "yllw": correct = "" (no match)

In addition, the spell checker operates under the following precedence rules:

  • When the query exactly matches a word in the wordlist ( case-sensitive ), you should return the same word back.
  • When the query matches a word up to capitlization, you should return the first such match in the wordlist.
  • When the query matches a word up to vowel errors, you should return the first such match in the wordlist.
  • If the query has no matches in the wordlist, you should return the empty string.

Given some queries, return a list of words answer, where answer[i] is the correct word for query = queries[i].

Example 1:

Input: wordlist = [“KiTe”,“kite”,“hare”,“Hare”], queries = [“kite”,“Kite”,“KiTe”,“Hare”,“HARE”,“Hear”,“hear”,“keti”,“keet”,“keto”]

Output: [“kite”,“KiTe”,“KiTe”,“Hare”,“hare”,““,””,“KiTe”,"",“KiTe”]

Example 2:

Input: wordlist = [“yellow”], queries = [“YellOw”]

Output: [“yellow”]

Constraints:

  • 1 <= wordlist.length, queries.length <= 5000
  • 1 <= wordlist[i].length, queries[i].length <= 7
  • wordlist[i] and queries[i] consist only of only English letters.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    java.lang.String[]
    spellchecker(java.lang.String[] wordlist, java.lang.String[] queries)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • spellchecker

      public java.lang.String[] spellchecker(java.lang.String[] wordlist, java.lang.String[] queries)