const armstrong = ((n) => {
    var ar = n.toString().split('')
    var l = ar.length;
    var sum = 0;
    for(var i=0; i<=ar.length-1; i++) {
        sum +=ar[i]**l
    }
    return n === sum
})



for(var i=1; i<=2000; i++) {
    if(armstrong(i)) {
        console.log(`${i} is armstrong number`)
    }
}