Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | export function duplicateEncode(word: string) { let res = ""; let i = 0; while (i < word.length) { const char = word[i]; const firstIndex = word.indexOf(char) const lastIndex = word.lastIndexOf(char) if (firstIndex !== lastIndex) { res += ")" } else { res += "(" } i++ } return res; } export function duplicateEncode1(word: string) { return word .toLowerCase() .split('') .map((a, _, w) => { return w.indexOf(a) == w.lastIndexOf(a) ? '(' : ')' }) .join('') } console.log( duplicateEncode("din"), "(((" ) console.log( duplicateEncode("recede"), "()()()" ) console.log( duplicateEncode("Success"), ")())())" ) console.log( duplicateEncode("(( @"), "))((" ) |