NTT DATA Developer interview questions

Easy but lengthy interview as a fresher and it was a pool campus. 1. Aptitude. 2. GD 3.Technical Interview for 20 minutes regarding my projects and programs like swapping,palindrome, and how i will validate a text box if i am developing a web page. 4.HR round-almost a big headache at that moment-he was not convincing.He asked my fav language-I said Java he said you don't like C lang,I said I like but my fav is java.He said ok write a program to reverse a string in C.and many questions regarding my college and projects.Finally he said y should i hire u? and i had given 10 reasons but he was not convinced.