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Question: Write an O(n)-time nonrecursive procedure that, given an n-node binary tree, prints out the key of each node in the tree. Use a st...

Question : Let X[1 .. n] and Y [1 .. n] be two arrays, each containing n numbers already in sorted order. Give an O(lg n)-time algorithm to ...

I came across a question regarding c++, is it more efficient to use memcmp to determine equality of two objects of the same type. This is n...

While doing android programming, it's a common sense to use Activity to interact with users and use Service to perform time consuming ta...

There are times when I deployed an application on a box different from the developing box, the application failed to start with following me...

Question: Suppose that you want to output 0 with probability 1/2 and 1 with probability 1/2. At your disposal is a procedure BIASED-RANDOM, ...

In android sdk document, it's mentioned that all components(Activity, Service, etc) run on the main thread. The main thread is the threa...

A friend asked my idea about the exercise 5.1-2 of introduction to algorithms . Here is the original question: Question: Describe an impleme...

In this post, I'll show some basic operations in android with a simple video player. The demo shows how to: Use explicit intent List vid...

The adb tool in android sdk is convenient utility for debugging and control android emulators. One of its powerful features is it can forwa...

What is SIP SIP Protocol is one of widely used signaling protocol, with the main purpose of, as its name is abbreviated for, initializatio...

As an IT guy, there are times we need to make technical presentation. How to do it well? I'm no expert in presentation at all, but I...