개인용 복습공간

위치 값(x, y)으로 배열 구하기 function solution(n, left, right) { return Array(right - left + 1).fill(left) .map((el, idx) => Math.max(Math.floor((el + idx) / n), (el + idx) % n) + 1); }

board를 변환 후 shift()로 뽑아서 동일한 인형이면 pop() 시키기 function solution(board, moves) { board = board.map((item, idx) => item.reduce((acc, el, lvl) => { if (board[lvl][idx] != 0) { acc.push(board[lvl][idx]); } return acc; }, [])); let temp = []; return moves.reduce((rs, el) => { const picker = board[el - 1].shift(); if(picker){ if (temp[temp.length - 1] == picker) { temp.pop(); rs += 2; }else{ temp.push(p..

toString으로 이진 변환 function solution(s) { let delemination = 0, trans = 0, cnt = 0; while(s != 1){ delemination += s.replace(/1/g, '').length; trans = s.replace(/0/g, '').length; s = trans.toString(2); cnt++; } return [cnt, delemination]; }

*과 #을 숫자값으로 두고 누르기 function solution(numbers, hand) { let lHand = '10' , rHand = '12'; return numbers.reduce((acc, el) => { if(el == 0) { el = 11; }; const temp = el % 3; if(temp == 0){ rHand = el; acc += 'R'; }else if(temp == 1){ lHand = el; acc += 'L'; }else{ const r_position = Math.abs(Math.ceil(el / 3) - Math.ceil(rHand / 3)) + (rHand % 3 == temp ? 0 : 1); const l_position = Math.abs(Math.ce..

1. 평균값으로 찾기 function solution(citations) { const sum = citations.reduce((acc, el) => acc + el); let avg = Math.floor(sum / citations.length); let cnt = citations.filter(el => el >= avg).length; let answer; for (let i = 0; i = avg).length; if(answer == avg){ break; } } return answer; } 2. 역정렬 후 최적화된 값 찾기function solution(citations) { let cnt = 0; citations.sort((a..