function toArr(){
// console.log(this);
return [...this];
}
String.prototype.toArr = toArr;
const str = 'rdgferv5';
console.log(str.toArr());
console.log('kjklkdjhfojirvldmnfbvs'[1].toUpperCase());
function accum(s) {
let res ='';
for (let i=0; i<s.length; ++i){
let current=s[i];
res+=current.toUpperCase();
let j=i;
while(j>0){
res+=current.toLowerCase();
j--;
}
res+='-';
}
return res.slice(0, -1);
}
function countPositivesSumNegatives(input) {
if (typeof input === 'object' && input.length !== 0 && input !== 'null') {
let res = [0, 0];
for (let i=0; i<input.length; ++i){
input[i] > 0 ? res[0]= res[0]+1 : res[1] = res[1]+input[i];
}
return res;
} else { return [] }
}
console.log(typeof null);
console.log(countPositivesSumNegatives(null));
