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804-Unique-Morse-Code-Words.js
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47 lines (43 loc) · 1010 Bytes
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/**
* @param {string[]} words
* @return {number}
*/
const uniqueMorseRepresentations = (words) => {
const getMorseChar = (char) => {
const morseTable = {
a: '.-',
b: '-...',
c: '-.-.',
d: '-..',
e: '.',
f: '..-.',
g: '--.',
h: '....',
i: '..',
j: '.---',
k: '-.-',
l: '.-..',
m: '--',
n: '-.',
o: '---',
p: '.--.',
q: '--.-',
r: '.-.',
s: '...',
t: '-',
u: '..-',
v: '...-',
w: '.--',
x: '-..-',
y: '-.--',
z: '--..'
};
return morseTable[char];
};
const set = new Set();
for (const word of words) {
const morseWord = word.split('').reduce((acc, char) => acc + getMorseChar(char), '');
set.add(morseWord);
}
return set.size;
};