C++ Trie prefix tree解母音拼字Leetcode 966 Vowel Spellchecker

C++ Trie  prefix tree解母音拼字Leetcode 966  Vowel Spellchecker

如果unordered_set, unordered_map有其他替方案就用，能用Trie去解也算是一種成就

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If there are alternatives to unordered_set and unordered_map, use them. Being able to solve them with Trie is also an achievement.

[codes on Leetcode]https://leetcode.com/problems/vowel-spellchecker/solutions/7187402/vowel-bitmask-trie-vs-hash-tables-15ms-beats-100/