First, an online coding test on cocubes.com. There were three questions in the test.

Some who answered all three questions weren't selected, while others who answered only two got selected, so optimization and lines of code do matter. Results were declared after one week.

Then, a group fly. Almost half of the candidates were rejected after this.

Three more interviews were held that day. Final results were declared after two days.

Given an alphabet set, different from the standard a-z set, and then for two strings, we had to write our own strcmp function. (Maps not allowed).

Reverse a linked list in place, where you are not allowed to tamper with a given node (pointer to the node was provided). Include all edge cases.