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ch-1.js
28 lines (26 loc) · 1 KB
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ch-1.js
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"use strict";
function commonCharacters(...words) {
let common = words.shift();
let countCommon = new Map();
for (let character of common) {
countCommon.set( character, (countCommon.get(character) ?? 0) + 1 );
}
for (let word of words) {
let countCharacters = new Map();
for (let character of word) {
countCharacters.set( character, (countCharacters.get(character) ?? 0) + 1);
}
for (let character of common) {
if( word.indexOf(character) == -1 ) {
let last = common.indexOf(character);
common = common.slice(0, last) + common.slice(last+1);
}
else if (countCommon.get(character) > countCharacters.get(character)){
countCommon.set( character, (countCommon.get(character) - 1));
let last = common.lastIndexOf(character);
common = common.slice(0, last) + common.slice(last+1);
}
}
}
return common.split("");
}