Computer Hardware & Software interview questions

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“You have a 100 coins laying flat on a table, each with a head side and a tail side. 10 of them are heads up, 90 are tails up. You can't feel, see or in any other way find out which side is up…”

“1. Build the CERNER tree
2. Reverse string
3. Binary search
4. How do you find and fix a bug”

“Design Checker/Chess game in Objected Oriented View.”

“Find number of ones in an integer.”

“Find the first index of the substring.
Do not use java library function or regular expressions.

And measure the performance of your implementation with the standard java library…”

“Given an array of integers eg [1,2,-3,1] find whether there is a sub-sequence that sums to 0 and return it (eg 1,2,-3 or 2,-3,1)
    Checking every sub-sequence is O(n^2) which is too inefficient”

“Write the BST for the word "CERNER"”

“Most unexpected question: Describe to me the process and benefits of wearing a seatbelt.”

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“An abstract question about ways to simulate behavior of workers who move stools around a workspace in some controlled way, and what the expected results would be.”

“How many minutes before 5pm is it if 30 mins ago it was four times as many minutes after 3pm?”

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