Given a list of n numbers, the median is the number of rank dn/2e, i. e., it is the dn/2eth smallest element. Suppose the list is changing dynamically. That is at every step, a number is added or deleted from the list. The goal is to output the median in the current list as fast as possible. In other words, at any point in time, we would like to answer the query: "What is the median of the current list of numbers ?". How fast can you answer this query?

Under which key category do the page up and page down keys fall? page up and page down keys fall under the keys category.

How to launch an app: steps to be successful? launching an app is a great idea, but it’s not that easy as we supposed to think. the majority of mobile applications don’t generate revenue because companies aren’t ready to be competitive. referring to our experience in successfully building and launching apps we hope to you omit these difficulties. we are going to talk about ideas, marketing, testing your product, its development, distribution and support. you will learn 8 product launch stages to succeed.

Whats three fourths of 15(this is supposed to be in math but i clicked too fast)