ADP interview question

1. In Technical round i was asked to write two programs one was reversing a string in optimized way. loop till half length and swap each char in string. and second question was about rotation of matrix 90 degrees in clockwise direction. the code was written on google doc and we need to explain and optimize it. 2. Hr round was veery nice. Some senior hr will take it and from introduction to all the hobies and things ayou do he will ask. all the general hr questions with some example.