problem11.js

const data = '08 02 22 97 38 15 00 40 00 75 04 05 07 78 52 12 50 77 91 08 49 49 99 40 17 81 18 57 60 87 17 40 98 43 69 48 04 56 62 00 81 49 31 73 55 79 14 29 93 71 40 67 53 88 30 03 49 13 36 65 52 70 95 23 04 60 11 42 69 24 68 56 01 32 56 71 37 02 36 91 22 31 16 71 51 67 63 89 41 92 36 54 22 40 40 28 66 33 13 80 24 47 32 60 99 03 45 02 44 75 33 53 78 36 84 20 35 17 12 50 32 98 81 28 64 23 67 10 26 38 40 67 59 54 70 66 18 38 64 70 67 26 20 68 02 62 12 20 95 63 94 39 63 08 40 91 66 49 94 21 24 55 58 05 66 73 99 26 97 17 78 78 96 83 14 88 34 89 63 72 21 36 23 09 75 00 76 44 20 45 35 14 00 61 33 97 34 31 33 95 78 17 53 28 22 75 31 67 15 94 03 80 04 62 16 14 09 53 56 92 16 39 05 42 96 35 31 47 55 58 88 24 00 17 54 24 36 29 85 57 86 56 00 48 35 71 89 07 05 44 44 37 44 60 21 58 51 54 17 58 19 80 81 68 05 94 47 69 28 73 92 13 86 52 17 77 04 89 55 40 04 52 08 83 97 35 99 16 07 97 57 32 16 26 26 79 33 27 98 66 88 36 68 87 57 62 20 72 03 46 33 67 46 55 12 32 63 93 53 69 04 42 16 73 38 25 39 11 24 94 72 18 08 46 29 32 40 62 76 36 20 69 36 41 72 30 23 88 34 62 99 69 82 67 59 85 74 04 36 16 20 73 35 29 78 31 90 01 74 31 49 71 48 86 81 16 23 57 05 54 01 70 54 71 83 51 54 69 16 92 33 48 61 43 52 01 89 19 67 48'

const slicedData = data.split(' ')
const numbers = []
// const pows = []
let max = -1
let pow = 0

//data 안에 있는 string을 number로 전환
for (value of slicedData){
  numbers.push(parseInt(value))
}

// 합에서 제외할 번째의 배열 index
const passNum =[17,18,19,37,38,39, 57,58,59,77,78,79,97,98,99, 117,118,119,137,138,139,157,158,159,177,178,179,197,198,199,217,218,219,237,238,239,257,258,259,277,278,279,297,298,299,317,318,319,337,338,339,357,358,359,377,378,379,397,398,399]

for (let i = 0; i < numbers.length-4; i++) {
  if(passNum.indexOf(i) === -1)
    pow = (numbers[i]*numbers[i+1]*numbers[i+2]*numbers[i+3])
    pow > max ? max = pow : max = max;
}
for (let i = 0; i < 337; i++) {
  if(passNum.indexOf(i) === -1)
  pow = (numbers[i]*numbers[i+21]*numbers[i+42]*numbers[i+63])
  pow > max ? max = pow : max = max;
}

const passNum2 = [0,1,2,20,21,22,40,41,42,60,61,62,80,81,82,100,101,102,120,121,122,140,141,142,160,161,162,180,181,182,200,201,202,220,221,222,240,241,242,260,261,262,280,281,282,300,301,302,320,321,322,340,341,342,360,361,362,380,381,382]
for (let i = 0; i <= 339; i++) {
  if(passNum2.indexOf(i) === -1)
  pow = (numbers[i]*numbers[i+19]*numbers[i+38]*numbers[i+57])
  pow > max ? max = pow : max = max;
}

console.log(max)