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Showing posts from November, 2020

Valid Parenthesis Problem

 Intuition Imagine you are writing a small compiler for your college project and one of the tasks (or say sub-tasks) for the compiler would be to detect if the parenthesis are in place or not. The algorithm we will look at in this article can be then used to process all the parenthesis in the program your compiler is compiling and checking if all the parenthesis are in place. This makes checking if a given string of parenthesis is valid or not, an important programming problem. The expressions that we will deal with in this problem can consist of three different type of parenthesis: (), {} and [] Before looking at how we can check if a given expression consisting of these parenthesis is valid or not, let us look at a simpler version of the problem that consists of just one type of parenthesis. So, the expressions we can encounter in this simplified version of the problem are e.g. (((((()))))) -- VALID ()()()()     -- VALID (((((((()    -- INVALID ((()(())))   -- VALID Let's look at

5 Alternatives of Adobe After Effects

 Adobe After Effects may be a powerful editing and visual effects software for creating stunning videos. Thanks to its feature-packed array of tools for animation, cinematic effects, and movie compositing, After Effects has been wont to create visual effects for high-profile projects like “Iron Man,” “The Walking Dead,” and “Star Trek. ” But the steep learning curve, high cost ($239.88 per annum or $31.49 per month), complex interface, and harsh hardware demands (especially on RAM and disk space) mean the long-lasting software isn’t ideal for everybody . That’s why we’ve listed the simplest After Effects alternatives during this post. 1.    HitFilm Pro HitFilm Pro is an all-in-one video editing, visual effects, and 3D compositing software for filmmakers and motion artists. It’s an excellent After Effects alternative if you would like detailed graphics and crowd pleasing computer graphics . Key features: Supports lights, shadows, and environment maps that make realistic objects and effe

Introduction to Time Complexity for Programmers

The efficiency of algorithms is vital for all the programmers including competitive programming. Usually, it is easy to style an algorithm that solves the matter slowly, but the important challenge is to invent a fast algorithm. If the algorithm is just too slow, it'll get only partial points or no points at all. The time complexity of an algorithm estimates what proportion time the algorithm will use for some input. The goal is to represent the efficiency as a function whose parameter is the size of the input. By calculating the time complexity, we can determine whether the algorithm is fast enough without implementing it. Calculation rules The time complexity of an algorithm is denoted as O(… ) where the three dots represent some function. Usually, the variable n denotes the input size of the function. For example, if the input is an array of numbers, n are going to be the dimensions of the array, and if the input may be a string, n are going to be the length of the string. Loops