fibonacci

 function fibonacci(kolom, baris) {
        let output  = '';
        let hasil   = [];
        let jumlah  = kolom * baris;
        hasil[0] = 0;
        hasil[1] = 1;
        for (let fib = 1; fib < jumlah; fib++) {
            hasil.push(hasil[fib] + hasil[fib - 1]);
        }

        let spasi = [];

        let revSpasi    = spasi.reverse();
        for (let en = 0; en < hasil.length - 1; en++) {

            output  += ' ' + hasil[en];
            let ep   = parseInt(en) + 1;
            ep       = ep % parseInt(kolom) == 0;

            if (ep) {output += '\n';}
        }


        return output
    }


    console.log(fibonacci(4, 3))