I was getting selected from coding round and then my technical interviews are scheduled. I have cleared my first technical round easily. And in my second technical round I did my level best and I got selected to for HR round, but there I got rejected because there are some questions in which I did bluff a little bit as well as I was more job oriented.

Given vector of strings you have to give prefix of all the strings which are same.

Implement a stack manually.

Calculate factorial