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I am constructing a binary tree. Let me know if this is a right way to do it. If not please tell me how to?? I could not find a proper link where constructing a general binary tree has been coded. Everywhere BST is coded. 3 / \ 1 4 / \ 2 5 This is the binary tree which i want to make.I should be able to do all the tree traversals.Simple stuff. public class Binarytreenode { public Binarytreenode left; public Binarytreenode right; public int data; public Binarytreenode(int data) { this.data=data; } public void printNode() { System.out.println(data); } public static void main(String ar[]) {

We are given a sorted array. Let the initial value of pass be zero. We can do the following operation any number of times: Select any k numbers at a time. Add them all up. Add this sum to pass If a number, say x , is being selected for the first time from the array, then it is considered as x only. When it is selected for the second time , then it is considered as -x , and for the third time, again as x , and so on... For example, let the array be [-14, 10, 6, -6, -10, -10, -14] and k = 4 , and we'll only do the operation once. We select these 4 numbers: {14, 10, 6, -6} . Adding them up, we

Which is the better approach, directly implementing LocationListener like this public class BackgroundService extends Service implements LocationListener {} or normally declared the LocationListener inside the class? LocationListener locationListener = new LocationListener() {}; In the second piece of code you have to call the attribute locationListener prior to calling the methods of the interface. In the first piece of code you can access the interface methods directly. So if you know that every method call costs cpu time then to implement it directly in the class rather than putting it as

I'm trying to implement a very simple preferential attachment algorithm for creating scale-free networks. These have degree distributions that follow a power-law, i.e. P(k) ~ k^-g, where g is the exponent. The algorithm below should produce degree distributions with the exponent equal 3 +/- 0.1, my implementation does not the exponents are closer to 2.5 +/- 0.1. I'm clearly not understanding something somewhere and continue to get it wrong. I'm sorry if this is in the wrong place, I couldn't decide whether it should be in stackoverflow or maths.stackexchange.com. The Algorithm: Input: Number

This question already has an answer here: Is there a way to simulate the C++ 'friend' concept in Java? 19 answers How does one implement the friend concept in Java (like C++)? Alastor Moody Java does not have the friend keyword from C++. There is, however, a way to emulate that; a way that actually gives a lot more precise control. Suppose that you have classes A and B. B needs access to some private method or field in A. public class A { private int privateInt = 31415; public class SomePrivateMethods { public int getSomethingPrivate() { return privateInt; } private SomePrivateMethods() { } //