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Given a string you need to print all possible strings that can be made by placing spaces (zero or one) in between them.

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Given a Binary Tree and a key ‘k’, find distance of the closest leaf from ‘k’.

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Given a set of n nuts of different sizes and n bolts of different sizes. There is a one-one mapping between nuts and bolts. Match nuts and bolts efficiently.

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In Manacher’s Algorithm Part 1 and Part 2, we gone through some of the basics, understood LPS length array and how to calculate it efficiently based on four cases.

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Given a string ‘str’ of digits, find length of the longest substring of ‘str’, such that the length of the substring is 2k digits and sum of left k digits is equal to the sum of right k digits.

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About Polycom Polycom is a multinational corporation that develops video, voice and content collaboration and communication technology.

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Round 1: 10 Aptitude questions with difficulty level hard.

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Consider lines of slope -1 passing between nodes (dotted lines in below diagram). Diagonal sum in a binary tree is sum of all node’s data lying between these lines.

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Amazon sde2 experience:

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In Manacher’s Algorithm Part 1 and Part 2, we gone through some of the basics, understood LPS length array and how to calculate it efficiently based on four cases. Here we will implement the same.

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We have discussed implementation of Reverse DNS Look Up Cache. Forward DNS look up is getting IP address for a given domain name typed in the web browser.

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1) IQ Test: 30 ques in 30 mins consisting of difficult quantitative aptitude questions.

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In Manacher’s Algorithm – Part 1, we gone through some of the basics and LPS length array. Here we will see how to calculate LPS length array efficiently.

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Given a string, find the longest substring which is palindrome. if the given string is “forgeeksskeegfor”, the output should be “geeksskeeg”

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