I'm trying to create calculator without binary function in java

Question

Tell me how can I create Decimal to Binary Converter
Without using binary function
See my code and tell me what I can do ?
https://code.sololearn.com/cOEgRoFs46i5/?ref=app

Answer 1

Here's a couple of examples

https://code.sololearn.com/cQXWfeJ3AdKY/?ref=app
https://code.sololearn.com/cUR7HTKtcTcx/?ref=app

Answer 2

Try it this way:

int num = 5;
String bin = "";
while(num > 0) {
bin = String.valueOf(num%2) + bin;
num /= 2;
}
System.out.println(bin); // 101

Answer 3

Thanks ChaoticDawg
I had a look at your examples. I've seen that my first version has a problem with num == 0. And that I do not need a conversion like String.valueOf().
So this one is better:

int num = 5;
String bin = "";

do {
bin = ( num % 2 ) + bin;
num /= 2;
} while (num > 0);

System.out.println(bin); // 101