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Copy pathuniqueMorseCode.js
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50 lines (45 loc) · 825 Bytes
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/**
* @param {string[]} words
* @return {number}
*/
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: '--..'
}
// Time complexity: O(n^2);
// Space Complexity: O(n);
const uniqueMorseRepresentations = function (words) {
const transformations = [];
words.forEach(word => {
let result = word.split('').map(char => morseTable[char]).join('');
if (transformations.indexOf(result) === -1) {
transformations.push(result);
}
});
return transformations.length;
};
uniqueMorseRepresentations(["gin", "zen", "gig", "msg"])