804_unique_morse_code_words.py

class Solution:
    def uniqueMorseRepresentations(self, words: List[str]) -> int:
        self.morse_code = [".-","-...","-.-.","-..",".","..-.","--.","....","..",".---","-.-",".-..","--","-.","---",".--.","--.-",".-.","...","-","..-","...-",".--","-..-","-.--","--.."]

        def word_to_morse_code(word: str) -> str:
            ans = ''
            for ch in word:
                ans += self.morse_code[ord(ch)-ord('a')]
            return ans

        morse_words_set = set()
        for i in range(len(words)):
            morse_words_set.add(word_to_morse_code(words[i]))
        return len(morse_words_set)

'''
    This is my personal record of solving Leetcode Problems. 
    If you have any questions, please discuss them in [Issues](https://github.com/mengxinayan/leetcode/issues).
    Copyright (C) 2020-2022  mengxinayan

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
'''