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

Very frequently asked. Favorite question in Walk in Drive of many Indian service companies.
  Q1. Difference between TreeMap and HashMap ?Core Java
Anonymous
Ans. They are different the way their elements are stored in memory. TreeMap stores the Keys in order whereas HashMap stores the key value pairs randomly.

  Sample Code for treemap

  Sample Code for hashmap

 Help us improve. Please let us know the company, where you were asked this question :   

   Like      Discuss      Correct / Improve     java   collections   map   treemap   hashmap     Amber Road  CTS (Cognizant)  ION Trading  DataMetica  Accenture  The Advisory Board Company  BidGely  Infosys  Tata Consultancy (TCS)  HCL Technologies  Wipro  Booking.com  MakeMyTrip  Garena Online  Garmin  ION Trading  Accuity  Palantir Technologies  Books International  Wealthfront  Marin Software  Garmin  IBM  Global Logic  Fiserv  Cumulus Systems  CCTS  UST Global  Cumulus Systems   Apcolite      basic        frequent

Try 1 Question(s) Test


Related Questions

  Which of the following collections stores its elements in insertion Order ?

a. HashMap
b. TreeMap
c. LinkedHashMap
d. LinkedMap
  What is comparator interface used for ?
  Which of the following collection maintain its elements in Natural Sorted order ?
  Which are the sorted collections ?
  How can we reverse the order in the TreeMap ?
  TreeMap orders the elements on which field ?
  How TreeMap orders the elements if the Key is a String ?
  Can we add heterogeneous elements into TreeMap ?
  Will it create any problem if We add elements with key as user defined object into the TreeMap ?


Frequently asked in CTS ( Based on 2 feedback )
  Q2. What is the difference between comparable and comparator in java.util pkg?Core Java
Admin
info@buggybread.com
Ans. Comparable interface is used for single sequence sorting i.e.sorting the objects based on single data member where as comparator interface is used to sort the object based on multiple data members.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like      Discuss      Correct / Improve     java   java.util   comparable   comparator   collections     Verilogue  Accenture  Varian Medical Systems  L&T Infotech  Oracle  eIntern  Happiest Minds Technologies  HCL Technologies  Cognizant (CTS)  Cerner  Coviam  EdgeVerve Systems  Virtusa Polaris  Trimax IT Infrastructure & Services  Xpanxion  Appy Pie  WealthFront  Varian Medical Systems  Bristlecone  Verilogue  Guavus  eClinicalWorks      basic        frequent


Related Questions

  What is comparator interface used for ?
 Sort a List of Objects using comparable and comparator


Frequently asked these days as there are major changes in Java 8.
  Q3. What are new features introduced with Java 8 ?Core Java
Admin
info@buggybread.com
Ans. Lambda Expressions , Interface Default and Static Methods , Method Reference , Parameters Name , Optional , Streams, Concurrency.

  Sample Code for Lambda

  Sample Code for interface default

  Sample Code for Optional

  Sample Code for Streams

  Sample Code for java.time

  Sample Code for Predicate

  Sample Code for Consumer

  Sample Code for MapMerge

 Help us improve. Please let us know the company, where you were asked this question :   

   Like      Discuss      Correct / Improve     java   java8   technical lead   technical architect     Kayak.com  Luxoft  Overstock.com  Span Infotech  Wealthfront  EMC  L&T Infotech  Vistana  Luxoft  GoodData  DreamWorks Animation  Cognizant (CTS)  Overstock   Nucleus      expert        frequent


Related Questions

  Difference between final and effectively final ? Why is effectively final even required ?
  What is StringJoiner ?
 Why can't we have diamond problem with interfaces ?
  What is the use of Optional ?
 Is it ok to use optional everywhere just to get over nullpointerexception ?
  What is the @FunctionalInterface annotation ?
  Difference between DoubleSummaryStatistics , IntSummaryStatistics and LongSummaryStatistics ?
  Name few "Optional" classes introduced with Java 8 ?
  What are the changes in Java.io in Java 8 ?




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