Solution.rs

use std::collections::HashSet;
impl Solution {
    pub fn unique_morse_representations(words: Vec<String>) -> i32 {
        const codes: [&str; 26] = [
            ".-",
            "-...",
            "-.-.",
            "-..",
            ".",
            "..-.",
            "--.",
            "....",
            "..",
            ".---",
            "-.-",
            ".-..",
            "--",
            "-.",
            "---",
            ".--.",
            "--.-",
            ".-.",
            "...",
            "-",
            "..-",
            "...-",
            ".--",
            "-..-",
            "-.--",
            "--..",
        ];
        words
            .iter()
            .map(|word| {
                word.as_bytes()
                    .iter()
                    .map(|v| codes[(v - b'a') as usize])
                    .collect::<String>()
            })
            .collect::<HashSet<String>>()
            .len() as i32
    }
}