面试题：Suppose we have N companies, and we want to eventually merge them into one big company. How many ways are there to merge ？

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面试题：How do you find out the fifth maximum element in an Binary Search Tree in efficient manner.

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面试题：Given that you have one string of length N and M small strings of length L. How do you efficiently find the occurrence of each small string in the larger one ？

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面试题：What’s 2 to the power of 64 ？

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面试题：Write a function that flips the bits inside a byte (either in C++ or Java). Write an algorithm that take a list of n words, and an integer m, and retrieves the mth most frequent word in that list.

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面试题：How does C++ deal with constructors and deconstructors of a class and its child class ？

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面试题：Distance is defined like this : If a[i], b[j] and c[k] are three elements then distance=max(abs(a[i]-b[j]),abs(a[i]-c[k]),abs(b[j]-c[k]))” Please give a solution in O(n) time complexity

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面试题：You are given with three sorted arrays ( in ascending order), you are required to find a triplet ( one element from each array) such that distance is minimum.

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面试题：Implement put/get methods of a fixed size cache with LRU replacement algorithm.

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面试题：Given two binary trees, write a compare function to check if they are equal or not. Being equal means that they have the same value and same structure.

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