Round 1

Question 1: You are given a string : sfdgjdg3e67jgjyg456
                    Fetch all numbers & provide their sum. Write the code such that if there is any slight change of requirements then                      there should be minimum code change for that.

Question 2 : Remove duplicates from the array of elements.

Question 3 : Add the given 2 numbers & these numbers are so large that can't be represented by any numeric type.

Round 2

Question 1 : How to efficiently find the given alphanumeric value in the array of millions of such numbers & if not present then 
                    add it in the array.

Question 2 : Z -> 1...9
                    Find Z such that ZZ+ZZ+Z+Z+Z = 100

Question 3 : A, B , C-> 1...9
                    Find A & B such that AB*AB = CAB

Question 4 : ​Design the chess board

Then I was told by their recruiter that both the rounds are cleared & they don't have panel for next round, so I need to come again after 2-3 days. But I didnt get any response for 1 week, & when I enquired for that multiple times then I got the response that my profile is not shortlisted for further discussions. Strange...