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Oracle Interview Experience - 18th Feb 2016

Oracle Campus Recruitment Process on 10th February, 2016 at CBIT, Hyderabad. 

1st round consisting of 4 sections:

- General aptitude.
- Logical.
- Verbal.
- Technical (OS, DS, DBMS, Big o notations, Codd'S rules, OOAD).

Total 90 mins duration. Interviews on 18th February 2016. 3 technical interviews - 2 hours each and 1 hour interview - 20 mins. Results on 19th February.

1) First technical interview:

- Tell me about yourself?

- Which language are you comfortable in for coding?

- Given a large array, program to count frequency of each number in an optimized way? 

- Program for multiplication of two numbers consists of 20 digits each?

- Given almost a postfix expression, program to get the result?

- Given a excel sheet, get the column number of ABCD and column name of 6532?

- When all the numbers of different combinations consisting of 1, 2, 3, 4, 5 are arranged in increasing order, give the rank of number 35421?

- Given an array of positive and negative numbers, arrange them in such a way that all positive numbers at one end and negative numbers at other end (size of array is large and unknown).

- About projects?

All solutions should be optimized.

2) Second technical interview:

- Tell me about yourself?

- Explain about the questions asked in first interview and your approaches?

- Given a number 4.

1, 1, 1, 1
1, 1, 2
1, 3
2, 2

All the sets of this format without repetitions (code should be a generic one)

- Given a number and string find whether palindrome or not?

- Given a string, find all possible palindromes (string of length 1,2,3.....)?

- Given a set of strings - strings which are unique (not repeated) should be printed in sorted order?

- Repeated strings along with their frequencies?

- If any string is concatenation of two strings from given set of strings

- About projects and currently working project?

All solutions should be optimized.

3) Third technical interview:

- Tell me about yourself?

- Currently working project?

- What subjects are you good at?

- OS-swapping, thrashing, semaphores, paging, scheduling algorithms?

- DBMS - given tables, some queries on that, normalization and its forms with examples, primary key, super key, composite primary key, and joins.

- C: difference between call by value and call by reference?

- Java: Interface, inheritance, super keyword, final keyword, extends, implements, keywords, exceptional handling?

- Data structures: Queues, stacks, linked list, binary trees?

- Given an array from 1-100, find the missing number?

- Inserting a node in the middle of linked list?

- Given a array of repeated numbers, print the numbers in such a way that numbers are printed in increasing order of their frequencies and print the numbers in increasing order if frequencies are same and codes from data structures.

HR Interview:

- Tell me about yourself?

- Family background in particular?

- 3 strengths and 3 weakness?

- About preferred location?

- Some general HR questions?

Throughout the interviews, your way of approach to a problem is observed.


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