what is the average case and worst case time complexity for quicksort?
Development Engineer Interview Questions
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Debug a chat program from user point of view when it is failing to sign in the user means user is entering user name and password but it is not signing him in.
You have a directory tree of plain HTML files and your boss wants you to find all the phone numbers on the pages so they can be removed. What would you use to do this?
Design an LRU cache
Find all pairs of numbers in an array that sum to a given number, n, in linear time
Design LRU cache
Basic java questions and write a method to test whether a given binary search tree is valid or not
Detect a loop in the given directed graph.
Imagine a sequence like this: a, b, c...z, aa, ab, ac...zz, aaa, aab, aac.... aax, aaz, aba, abc... (Its same as excel column names). Given an integer (n), generate n-th string from the above sequence. Ps: Don't generate the full list of sequence till n. It'll be definitely bad approach :)
Vaguely remember finding pairs of elements in array with same sum
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