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Data Structures Interview Questions
Questions Answers Views Company eMail

Why we use linked list?

914

Why is hashmap faster than arraylist?

1024

Why is arraylist not thread safe?

919

Which is better hashset or treeset?

1015

What is the default capacity of hashmap?

841

What is difference between set and map?

996

What is difference between list and set?

837

What is difference between hashtable and hashmap?

1044

Why entry interface is used in map?

930

What is meant by arraylist?

924

What is the maximum size of array?

923

Which is better array or linked list?

909

Why is hashmap faster than treemap?

910

Why concurrenthashmap is fail safe?

961

What is difference between hashmap and treemap?

956


Post New Data Structures Questions

Un-Answered Questions { Data Structures }

Are linked lists considered linear or non-linear data structure?

1016


Tell me can the size of operator be used to tell the size of an array passed to a function?

1010


What are sorting algorithms used for?

973


What is the purpose of sorting algorithms?

988


Complete structure of hashmap, very detail description, along with the basic coding of the hashmap internal implementation.

1099


Define a complete binary tree?

933


What are hash tables good for?

916


How do you sort an array in decreasing order?

848


What is the difference between null and void pointer in data structures?

1161


How does bogo sort work?

988


What is space complexity of a program?

879


What is the difference between b tree and binary search tree?

871


Will hashmap allow null keys?

916


Does concat mutate array?

918


How would you reverse characters of an array without using indexing in the array.

901