ponydork's stats

let z = String.fromCharCode(49).split(''), f = +prompt(":3c nums of its: ")
while(f--){
    Array.isArray(z) ? alert(z.join('')) : alert(z)
    let f = z[0], k= 0, p = "", i=0
    while (i<z.length) {
        f != z[i] ? p += k+f : k
        f == z[i] ? k+= 1 : k= 1;
        f = z[i], i+=+1
    }
    z = p += k+ f
}