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Interview Questions and Answers for 'Makemytrip.com' - 3 question(s) found - Order By Newest

Q1. What is a ConcurrentHashMap ?

Ans. ConcurrentHashMap is a hashMap that allows concurrent modifications from multiple threads as there can be multiple locks on the same hashmap.

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Difference between concurrentHashMap and HashTable ?

isnt the use of HashTable and ConcurrentHashMap the same, i.e providing synchronized map collection ?

Q2. Print natural numbers sequentially with two threads.

Core Java

Ans. http://stackoverflow.com/questions/18799591/print-natural-sequence-with-help-of-2-threads1-is-printing-even-and-2nd-is-pri

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What are the steps to be performed while coding Junit with Mocking framework ?

What is a Sequence File?

What different level of logging you use while coding ?

Have you ever encoded the response before sending it back from the service? If Yes , Which encoding was used ?

What are the different type of encoding you have used ?

How does encoding affect using Reader / writer classes or Stream classes in Java ?

What is the difference between html encoding and url encoding ?

Does spaces get's encoded in html encoding ?

Q3. Find the repeating number using O(n) time and constant space.

Algorithm

Ans. http://www.geeksforgeeks.org/find-duplicates-in-on-time-and-constant-extra-space/

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Can you provide some implementation of a Dictionary having large number of words ?

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