given a number, how do you determine if its a power of 3?
Software Interview Questions
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count the number of duplicates in a binary tree in O(n) time O(1) space.
Describe your everyday work methodology
What was your most challenging bug you fixed?
You have a sentence with several words with spaces remove and words having their character order shuffled. You have a dictionary. Write an algorithm to produce the sentence back with spaces and words with normal character order.
Given a binary tree, print out the whole tree by levels
1.How to find the nearest parent of any two nodes in a given tree. Tree has mother and father nodes.
What signal is sent by default in the unix kill command
Given a string A and B, find the smallest substring of A that contains all the characters from B. (implement solution in O(n), keep in mind chars in B can repeat)
Implement data structure "Map" storing pairs of integers (key, value) and define following member functions in O(1) runtime: void insert(key, value), void delete(key), int get(key), int getRandomKey().
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