LiveCoading Hacktiv8 Soal 3b

polaSpiral2.js

var masalah2 = [
    [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]
]


var hasil = []
function spriral(input, pembanding = masalah2[0].length*masalah2[0].length) {
    for (var i = 0; i < input[0].length; i++) {
        for (var j = 0; j < input[0].length; j++) {
            if (i == 0) {
                if (hasil.length == pembanding) {
                  return hasil
                }else {
                  hasil.push(input[i][j])
                }
            } else if (i < input[0].length - 1 && j == input[0].length - 1) {
              if (hasil.length == pembanding) {
                return hasil
              }else {
                hasil.push(input[i][j])
              }
            }
        }
    }

    for (var i = input[0].length - 1; i >= 0; i--) {
        for (var j = input[0].length - 1; j >= 0; j--) {
            if (i == input[0].length - 1) {
              if (hasil.length == pembanding) {
                return hasil
              }else {
                hasil.push(input[i][j])
              }
            } else if (i > 0 && j == 0) {
              if (hasil.length == pembanding) {
                return hasil
              }else {
                hasil.push(input[i][j])
              }
            }
        }
    }

    var tmp = []
    for (var i = 1; i < input[0].length - 1; i++) {
        var tampung = []
        for (var j = 1; j < input[0].length - 1; j++) {
            tampung.push(input[i][j])
        }
        tmp.push(tampung)
    }

    return spriral(input = tmp)

}
console.log(spriral(masalah2))