adts

OpenJDK7: What essential ADTs are not Implemented in OpenJDK7 ?

What Abstract Datatypes should be added to OpenJDK7 ? ...

Is there a way to implement algebraic types in Java?

Is it possible, in Java, to enforce that a class have a specific set of subclasses and no others? For example: public abstract class A {} public final class B extends A {} public final class C extends A {} public final class D extends A {} Can I somehow enforce that no other subclasses of A can ever be created? ...

Tree Abstact Data Type

I'm doing a unit called Data Structures and Algorithms. We've just started and my professor has just taught us the basics of what Algebraic Semantics is and what Axioms are etc. Till now, I've just used Trees in the form of arrays. Not using the signature for pre-ordered tree as tree(value, tree, tree) where value is the value in the nod...

Hiding a "local" type parameter in Java

Suppose I'm using an interface with a generic type parameter interface Foo<T> { T getOne(); void useOne(T t); } The intention is that the type T is abstract: it enforces a type constraint on implementations of Foo, but the client code doesn't care exactly what T is. This is no problem in the context of a generic method: public <...

Creating ADTS frame on iPhone.... problem

Hello all, I am getting raw aac data from web stream and try to put it in ADTS frame in order to play it on iPhone. It works for 10 seconds then sound stops and restart but seems accelerated or mixed with others audio data. Quicktime and others audio app are unable to open my file. It seems my ADTS header is wrong but I am unable to...

Handling unions, subsets and supersets in Scala

I need to write a code snippet that would compare multiple arrays and produce the set that match the data in those arrays, produce the data set only in array A, but not in array B,C,D,in array B but not in A,C,D, being able to handle any number of arrays (i.e. dynamically looped). The code should utilize anonymous functions in Scala (i.e...

BST Level Traversal

Ok, so I'm trying to do a level order traversal of a binary search tree and its not working. The code below makes sense to me, but that is probably because I've been looking at it forever and I've convinced myself that it should work. void BST<T>::levelByLevel(ostream &out) { Queue<BinNodePointer> q; BinNodePointer subtreeRoot; i...

Invalid ADTS sampling_frequency_index and channel_configuration why?

Hello all, I hope someone can direct me on the right path before I put a lot of time and effort on this. I'm currently trying to parse an AAC+ frame to get information such as number of channels and sample frequency. So it seems that we can simply get this information from the ADTS header but most of the time this information is inaccur...