const natural = require('./index');
const max = require('./index');
var arr = [15, 35, -68, 6.6, 0];
var arr_2 = [38, 3.1415926, 68];
var arr_3 = [25, 35, -22, -0.33];
console.log(natural(arr));
console.log(natural(arr_2));
console.log(natural(arr_3));