Groupon Interview Questions : set 2

By | May 2, 2014

Here’s a general set of questions asked to candidates in Groupon interviews. We strongly advice you to go through these questions at least once before giving your Groupon Interview.

  1. Write a dynamic programming solution for finding maximum contiguous sub-sequence sum?
  2. Write a SQL to find the nth maximum salary in a employee table.
  3. Find Kth Min Values in an array?
  4. Write in-order traversal without using recursion?
  5. Reverse words in a string. Ex:
    Input : “This is a String”
    Output: “String a is This”
  6. Removing duplicates from unsorted list of integer?
    if you have unsorted list of
    0,5,9,5,6,7,6,9 the result should be 0,5,9,6,7 and the performance should be best over more number of elements.
  7. Find if a binary tree is bst?
  8. Write a code in java to design connection pool. You have to pass the parameter like pool size, time out etc.
    How will you call the connection from pool? How will you return the connection to pool once time out or connection not in use. You also have to write the exception handling mechanism to print any exception.

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