Re: [algogeeks] java
oh..ok thank you for replying :) On Tue, Mar 12, 2013 at 9:10 PM, manish untwal wrote: > according to my understanding the super class object have limited function > like for example > Class - animal : methods/behavior : roam() and eat() > and a sub class hippo : method/behavior : roam(),eat() and swim() > so a hippo is a animal then according to the polymorphic property of java > a reference of animal can refer to object of class hippo and animal but > still the reference can call only the behavior of class animal i.e : animal > A = new hippo() is legal but you can't call A.swim() because it refer to > the animal property of class hippo ie roam and eat...not swim. and also u > can't do this as hippo H = new animal() as this means animal should have > all the property of hippo because it is referred by a hippo reference do > H.swim() should not be a NULL.reply if you get it or not. > P.S : I tried to explain it through an example > > On Tue, Mar 12, 2013 at 8:51 PM, sulekha metta wrote: > >> what ever data members,member functions present in super class are >> applicable to subclass...subclass may contain more additional >> featuresso its obvious that size of subclass object is more than >> superclass object...now lets take an analogy of float(4 bytes) and double( >> 8 bytes) float can be implicitly converted into double( as float size is >> less when compared to double) but not vice versathen why is this not >> applicable to superclass object and subclass object(as size of superclass >> object is less when compared to subclass)? please tell if am wrong! >> >> >> On Tue, Mar 12, 2013 at 7:37 PM, subramony mahadevan > > wrote: >> >>> i think its just a logical reason take animal as superclass bird as >>> subclass ... since we are talking about inheritance it is " is a >>> relationship " ie bird is a animal not vice versa hence we cannot >>> implicitly convert to subclass >>> >>> >>> On Sat, Mar 2, 2013 at 6:18 PM, sulekha metta >>> wrote: >>> >>>> Q) why super class object can't be implicitly converted to subclass? >>>> is there any specific reason? >>>> Thanks in advance! >>>> >>>> -- >>>> sulekha metta >>>> B.E computer science >>>> osmania university >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Algorithm Geeks" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to algogeeks+unsubscr...@googlegroups.com. >>>> For more options, visit https://groups.google.com/groups/opt_out. >>>> >>>> >>>> >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Algorithm Geeks" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to algogeeks+unsubscr...@googlegroups.com. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >>> >>> >> >> >> >> -- >> sulekha metta >> B.E computer science >> osmania university >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Algorithm Geeks" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to algogeeks+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> >> > > > > -- > With regards, > Manish kumar untwal > Indian Institute of Information Technology > Allahabad (2009-2013 batch) > > -- > You received this message because you are subscribed to the Google Groups > "Algorithm Geeks" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to algogeeks+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- sulekha metta B.E computer science osmania university -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To unsubscribe from this group and stop receiving emails from it, send an email to algogeeks+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [algogeeks] java
what ever data members,member functions present in super class are applicable to subclass...subclass may contain more additional featuresso its obvious that size of subclass object is more than superclass object...now lets take an analogy of float(4 bytes) and double( 8 bytes) float can be implicitly converted into double( as float size is less when compared to double) but not vice versathen why is this not applicable to superclass object and subclass object(as size of superclass object is less when compared to subclass)? please tell if am wrong! On Tue, Mar 12, 2013 at 7:37 PM, subramony mahadevan wrote: > i think its just a logical reason take animal as superclass bird as > subclass ... since we are talking about inheritance it is " is a > relationship " ie bird is a animal not vice versa hence we cannot > implicitly convert to subclass > > > On Sat, Mar 2, 2013 at 6:18 PM, sulekha metta wrote: > >> Q) why super class object can't be implicitly converted to subclass? is >> there any specific reason? >> Thanks in advance! >> >> -- >> sulekha metta >> B.E computer science >> osmania university >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Algorithm Geeks" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to algogeeks+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> >> > > -- > You received this message because you are subscribed to the Google Groups > "Algorithm Geeks" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to algogeeks+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- sulekha metta B.E computer science osmania university -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To unsubscribe from this group and stop receiving emails from it, send an email to algogeeks+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[algogeeks] java
Q) why super class object can't be implicitly converted to subclass? is there any specific reason? Thanks in advance! -- sulekha metta B.E computer science osmania university -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To unsubscribe from this group and stop receiving emails from it, send an email to algogeeks+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[algogeeks] Pivot postion of quick sort
hi every one!! how does pivot position effect the efficiency in quick sort algorithm thanks in advance -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
[algogeeks] MS QUESTION
Hi all, This was asked in microsoft, question is write a program to reverse a linked list.and write it's test cases. i got very few test cases 1) check if the node is null 2) check if there is only one node 3) check if there is any loop in the linked list. can any one tell how to reverse a linked list if loop exits? is it possible? and can any one add few more test cases?? -- Regards sulekha metta B.E computer science osmania university -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
Re: [algogeeks] Re: INTERFACES VS ABSTRACT
@all thanks On Thu, Aug 23, 2012 at 6:08 PM, vaibhav shukla wrote: > Abstract class are used for Abstraction > Interface are used for Polymorphism > > On Thu, Aug 23, 2012 at 6:06 PM, Amit Tiwari wrote: > >> With an abstract class, the subclass of that inheritance tree only can >> and should provide the definitions of the methods. With an interface, >> subclasses of different inheritance tree can also implement the same >> methods. Interface provides a way to separate out and group common behavior >> of different inheritance trees. It is kind of a substitute for the multiple >> inheritance that some other languages provide. >> >> On Thu, Aug 23, 2012 at 4:59 PM, kings wrote: >> >>> Dear sulekha, >>> >>> when u want a default property to get embedded ie u want to force any >>> feature use abstract. >>> when u want an additional feature need to be added used interface. >>> >>> ex: >>> For a car the default things are steering, engine, etc... if u want the >>> car to compulsory to have A/c then add it in the abstract >>> for a car having ABS is optional include it as an interface where ever u >>> think its necessary. >>> >>> >>> On Tuesday, 21 August 2012 21:20:45 UTC+5:30, sulekha .m wrote: >>> >>>> >>>> hi all, >>>> why do we separately need interfaces in java?? we can declare all >>>> the methods in abstract class as abstract this serves the purpose,then why >>>> do we have interfaces??? >>>> -- >>>> sulekha metta >>>> B.E computer science >>>> osmania university >>>> >>>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Algorithm Geeks" group. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msg/algogeeks/-/qI3YhsGoh7wJ. >>> >>> To post to this group, send email to algogeeks@googlegroups.com. >>> To unsubscribe from this group, send email to >>> algogeeks+unsubscr...@googlegroups.com. >>> For more options, visit this group at >>> http://groups.google.com/group/algogeeks?hl=en. >>> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Algorithm Geeks" group. >> To post to this group, send email to algogeeks@googlegroups.com. >> To unsubscribe from this group, send email to >> algogeeks+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/algogeeks?hl=en. >> > > > > -- > best wishes!! > Vaibhav > > -- > You received this message because you are subscribed to the Google Groups > "Algorithm Geeks" group. > To post to this group, send email to algogeeks@googlegroups.com. > To unsubscribe from this group, send email to > algogeeks+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/algogeeks?hl=en. > -- sulekha metta B.E computer science osmania university -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
[algogeeks] INTERFACES VS ABSTRACT
hi all, why do we separately need interfaces in java?? we can declare all the methods in abstract class as abstract this serves the purpose,then why do we have interfaces??? -- sulekha metta B.E computer science osmania university -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
