How can we add a and b without using mathematical operators and sum() function

Question

In python or java

Answer 1

You can use binary operators such as AND, OR, XOR, and NOT to perform binary addition

Answer 2

Here is a code for addition:

https://code.sololearn.com/cEiQ2h02164T/?ref=app

You can search for binary arithmetic on google/youtube.

Read also the lessons about bitwise operators.