#heapsort

[mazegirl168]

Algorithm is not a bad word

Named for Arabic mathematician al-Khwarizmi and partially formalized by queer mathematician Alan Turing, algorithms are simply a process for doing things, potentially with a desired result.

An early algorithm we learn in school is how to add two whole numbers together.  Using pencil and paper, you can probably figure out what 420 + 69 is.  In fact there are multiple ways.  You could draw out 420 dots, draw another 69 dots, and count how many there are in total.  Or you could lay them vertically, start at the ones column, and compute the digits of the sum.

Algorithms are not strictly related to numbers.  What if you’re a teacher and you want to sort homework assignments alphabetically by the students’ names?  Well you’ll probably have a process, which involves checking repeatedly if two pieces of homework are out of order (e.g. if you had homework from Bob then homework from Alice, you would swap the two since Alice is first alphabetically).

Another great non-numerical example of algorithms is solving the Rubik’s Cube and it’s larger variants.  In the cube solving community, there are algorithms for specific processes, such as rotating corners cubies or flipping edge cubies.  Some of these apply to the 3x3x3 cube, others can be generalized to help one solve a 69x69x69 cube.

Algorithms are also beautiful.  Visualizing how the data dances around can be incredible.  Check out this animation from Wikipedia showing the Heapsort algorithm in action:

This inspired the hell outta me when I first saw it in 2007.  That diagram a couple seconds in, where it just sounds like it’s emitting a thunky beep at ya before suddenly just putting everything together.  The way there’s sort of a pattern before it.  Just that sheer magic.

You can also make art out of algorithms.  From my username, one of my favorite categories is maze generation algorithms.  Think Labyrinth, whose algorithm page I just linked, was an early website I found on the Internet, and I’m so happy it has survived the various eras of web evolution.  The Maze of Theseus in particular was a huge inspiration for me after printing it out in 2000 on a summer road trip.

Alas Think Labyrinth is from before the days of heavy animations on the Internet, so to visualize a maze algorithm I will instead link to Mike Bostock’s article on Visualizing Algorithms.  It includes many dynamic animations that are rendered in your browser, including the sorting algorithms and maze generation algorithms mentioned above, among many others.

So why the hate for algorithms?

On Tumblr in the past few days, and more generally social media in the past decade, we recently saw favoritism for sorting algorithms that allow us to view our feeds in chronological order.  Many claimed they were opposed to an algorithm that decided in a corporate-specific manner what we should see first.  Let me be clear:  the corporate ordering of a feed is bad, but it is not bad because it’s an algorithm.  It’s bad because it’s not one of the algorithms that users want for ordering their feed.

The other negative use case grew heavily in the past 15 years:  algorithms that are “trained” on biased and/or unethically obtained data.  We’ve seen many examples of systems that were trained on data sets of white college students such as facial recognition technology, which then later gets implemented at a large scale and fucks over people of color.  The past couple years we’ve seen a rise in creating data sets based on scraping millions of artists’ works without any permission from the artists themselves*.  Either of these applied to a corporate or government scale leads to active harm to populations already at risk and probably some new ones too.

Finally, we’ve seen a rise in computer automation for things that should be done by people.  I can’t find the specifics, but this quote is allegedly from a 1979 IBM presentation:

A computer can never be held accountable, therefore a computer must never make a management decision.

My first thought on where this comes up is applying for jobs.  Many companies will use a poorly thought out algorithm to filter through job applications, simply scanning for a couple key words they want (programmers who know Vulkan or Node.js) or more maliciously looking for words they don’t want (needing any kind of accommodation, sounding too anti-capitalist, etc).  These algorithms cannot be held accountable and should not be involved in any stage of the hiring process.

Quick aside:  When I was searching for the source of that quote about accountability, I typed in the first half in Google, and the autocomplete was

Fucking modern Google.

Some concluding thoughts

I like algorithms.  They are a passion of mine.  When people say algorithms are evil, I’m sad.  When people recognize the usage of certain algorithms in certain contexts are evil, I’m more happy (yet still disturbed these things happen).  I just really wanted to educate people on the usage of the word.

Also, algorithms are not about Al Gore’s dance moves.  Please stop with that stupid fucking joke.

*I mentioned scraping data from millions of images without permission of the creators.  My one iffy status with this is how sort of applies to the human brain doing a similar process over the span of one’s life.  What is it that separates my looking through a book of Escher’s works from a computer looking at it?

Obviously many things, but I’m horrendous as philosophy and ethics, so I’m just gonna stay in my comfort zone of pure algorithms and try not to get too involved.  Experts can figure out a more formal definition for what I can only describe as a gut feeling.

[elon-s0code]

Follow 4 more @elon_s.code #algorithm #algorithms Searching #linearsearch h #binarysearch #depthfirstsearch #breadthfirstsearch Sorting #insertionsort #heapsort #selectionsort #mergesort #countingsort Graphs #kruskalalgorithm #dijkstraalgorithm #bellmanfordalgorithm Arrays & basics #Java #cpp #python https://www.instagram.com/p/CnBInUiJmfq/?igshid=NGJjMDIxMWI=

[fortunatelycoldengineer]

Counting Sort Algorithm . . . . for more information http://bit.ly/3KiSJbT check the above link

[girlballs]

Can you explain heapsort to me?

[charaunofficial]

yer a good sort, chara. ain't done nothin wrong. (a mergesort, maybe, or a heapsort. maybe a blocksort.)

* ...

[codingprolab]

EECS 560 Lab 7 heaps

The topic for this lab is heaps.   You will do a heapsort on a binary heap experimentally comparing two methods of restructuring the heap after a deletemin.   You will need functions to push items up and down the heap.    Here’s  pseuodcode for push_up and push_down to use with buildhelp and heapsort.  A is a 1-based array.   You must also use 1-based arrays.   push_up (i) // move an item up the…

[huhyuhbah]

lecturer: "have put into the powerpoint very helpful images for walking through the example heapsort on your own"

the "helpful" images: zero annotations or colour coordination. not even arrows pointing towards the next step. just a load of "guess what i've fucking done here losers" images

[myprogrammingsolver]

Heaps and Heapsort

For this computer assignment, you are to write a C++ program to sort items in several input files, using the heapsort technique. For each input file, your program first reads the items from the input file and builds a heap structure for these items. Then, it retrieves these items from the heap structure in order and prints them out on stdout. Pointers to input files, certain constant definitions,…

[anantradingpvtltd]

Price: [price_with_discount] (as of [price_update_date] - Details) [ad_1] This book is intended for B. Tech (CS/IT), MCA and M. Tech students who want to have The basic to advanced knowledge of The design and analysis of algorithms. In This edition more algorithms are added, papers of last few years are solved in Chapters; few algorithms which were difficult to understand in previous edition are presented in easier form. Table of Content1. Introduction2. Growth of Functions3. Summations4. Recurrences5. Sets Relations and Functions6. Probability7. Heap and Heapsort 8. Quicksort9. Sorting in Linear Time10. Median and Order Statistic11. Elementary Data Structure12. Hashing13. BS Trees14. Optimal Binary search Trees15. AVL Trees and Splaying16. RB Trees17. Augmenting Data Structure18. Dynamic Programming19. Greedy Algorithms20. Amortized Analysis21. B Trees-External Searching22. Binomial Trees and Binomial Heaps23. Fibonacci Heaps24. Data Structure for Disjoint Sets25. Elementary Graph Algorithms26. Back Tracking27. Branch and Bound28. Minimum Spanning Tree29. Single-Source Shortest Paths30. All Pair Shortest Paths31. Network Flow32. Sorting Networks33. Arithmetic Circuits34. Algorithms for Parallel Computers35. Matrix Operation36. Polynomials and FFT37. Number-Theoretic Algorithms38. String Matching39. Computational Geometry40. NP-Completeness41. Non-Deterministic Algorithms42. Approximation Algorithms43. Program Publisher ‏ : ‎ Khanna Publishing; Fourth edition (1 January 2019) Language ‏ : ‎ English Paperback ‏ : ‎ 672 pages ISBN-10 ‏ : ‎ 9382609431 ISBN-13 ‏ : ‎ 978-9382609438 Item Weight ‏ : ‎ 950 g Dimensions ‏ : ‎ 20.3 x 25.4 x 4.7 cm Country of Origin ‏ : ‎ India [ad_2]

[big-o-notation-cheat-sheera]

big o notation cheat sheet work TMWV?

💾 ►►► DOWNLOAD FILE 🔥🔥🔥🔥🔥 This cheat sheet for Big O Notation (a time complexity cheat sheet across data structures) will help you understand a range of complications. This Big O Notation cheat sheet (time complexity cheat sheet or data structure cheat sheet) will help you understand various complexities. Big O Complexity Chart · When your calculation is not dependent on the input size, it is a constant time complexity (O(1)). · When the input size. BIG O NOTATION CHEAT SHEET · Complexities Comparisons between typical Big Os: · What do the notations in the cheat sheet represent: · Common Data Structures. 9 Known as asymptotics, the notion of tracking algorithmic performance reveals much about a solution's effectiveness. Ironically, this area of study was primarily developed before the introduction of modern computing. Today, this provides an advantage when testing new ideas and communicating with other developers. In computer science, asymptotics is expressed in a standard format known as Big-O Notation. The performance of the algorithm is directly related to the size of the input. Examples includes standard functionality found in Arrays and basic Linked Lists. The algorithm performs on a logarithmic curve based on the size of the input. Examples includes the binary search and heapsort algorithms as well as Binary Search Trees data structure. The performance of the algorithm does not vary depending on the size of the input. Examples include operations associated with Hash Table and Stack data structures. The performance of the algorithm decreases exponentially depending on the size of the input. Ironically, many pure sorting algorithms fall into this category including the insertion, selection and bubble sort. While there are many topics, you should measure your progress by a. Start by checking off items you know and work your way through the topics as you master each item. Be sure to check out my book for more practical code-based examples in Swift. Once you think you've got things covered, review my top 20 computer science questions then register for my next free class. Data Structures act as the container for holding our data. Our data can take many forms and complete certain functions depending on the container that holds the information. The goal of an algorithm is to come up with some predefined recipe to help us solve complex problems more easily. Examples of complex commercial solutions include PageRank for Google, connecting with friends on Facebook or being able to find driving directions through Google Maps. While these sorting algorithms provide a basic overview, other important concepts one should study include traversal techniques such as depth-first and breadth-first search as well as backtracking algorithms. Thanks for reviewing my Big-O Notation cheat sheet! Top Swift Interview Questions. Top 20 Computer Science Interview Questions. Top 5 Dynamic Programming Problems. Sign In My Account. Learn Swift. Swift Algorithms Book. Online Course. Computer Science Lab. CS Interview Questions. Swift Interview Questions. Big O Notation Cheat Sheet. Dynamic Programming Problems. Free Download. Become A Member. O n - Linear Time The performance of the algorithm is directly related to the size of the input. O log n - Logarithmic TIme The algorithm performs on a logarithmic curve based on the size of the input. O 1 - Constant Time The performance of the algorithm does not vary depending on the size of the input. How to Study While there are many topics, you should measure your progress by a. Common Data Structures Data Structures act as the container for holding our data. Sorting Algorithms The goal of an algorithm is to come up with some predefined recipe to help us solve complex problems more easily.

[time-complexity-cheat-sherd]

time complexity cheat sheet mod menu YZJW#

💾 ►►► DOWNLOAD FILE 🔥🔥🔥🔥🔥 This Big O Notation cheat sheet (time complexity cheat sheet or data structure cheat sheet) will help you understand various complexities. Big o cheatsheet with complexities chart Big o complete Graph ![Bigo graph][1] Legend ![legend][3] ! Time-complexity. Algorithms. When your calculation is not dependent on the input size, it is a constant time complexity (O(1)). · When the input size is reduced by half. Learn Big-O algorithm complexity and asymptotics for commonly used algorithms and data Big-O Algorithm Cheat Sheet O(log n) - Logarithmic TIme. 9 Known as asymptotics, the notion of tracking algorithmic performance reveals much about a solution's effectiveness. Ironically, this area of study was primarily developed before the introduction of modern computing. Today, this provides an advantage when testing new ideas and communicating with other developers. In computer science, asymptotics is expressed in a standard format known as Big-O Notation. The performance of the algorithm is directly related to the size of the input. Examples includes standard functionality found in Arrays and basic Linked Lists. The algorithm performs on a logarithmic curve based on the size of the input. Examples includes the binary search and heapsort algorithms as well as Binary Search Trees data structure. The performance of the algorithm does not vary depending on the size of the input. Examples include operations associated with Hash Table and Stack data structures. The performance of the algorithm decreases exponentially depending on the size of the input. Ironically, many pure sorting algorithms fall into this category including the insertion, selection and bubble sort. While there are many topics, you should measure your progress by a. Start by checking off items you know and work your way through the topics as you master each item. Be sure to check out my book for more practical code-based examples in Swift. Once you think you've got things covered, review my top 20 computer science questions then register for my next free class. Data Structures act as the container for holding our data. Our data can take many forms and complete certain functions depending on the container that holds the information. The goal of an algorithm is to come up with some predefined recipe to help us solve complex problems more easily. Examples of complex commercial solutions include PageRank for Google, connecting with friends on Facebook or being able to find driving directions through Google Maps. While these sorting algorithms provide a basic overview, other important concepts one should study include traversal techniques such as depth-first and breadth-first search as well as backtracking algorithms. Thanks for reviewing my Big-O Notation cheat sheet! Top Swift Interview Questions. Top 20 Computer Science Interview Questions. Top 5 Dynamic Programming Problems. Sign In My Account. Learn Swift. Swift Algorithms Book. Online Course. Computer Science Lab. CS Interview Questions. Swift Interview Questions. Big O Notation Cheat Sheet. Dynamic Programming Problems. Free Download. Become A Member. O n - Linear Time The performance of the algorithm is directly related to the size of the input. O log n - Logarithmic TIme The algorithm performs on a logarithmic curve based on the size of the input. O 1 - Constant Time The performance of the algorithm does not vary depending on the size of the input. How to Study While there are many topics, you should measure your progress by a. Common Data Structures Data Structures act as the container for holding our data. Sorting Algorithms The goal of an algorithm is to come up with some predefined recipe to help us solve complex problems more easily.

[programmingsolver]

CSE Lab 05 HeapSort Solution

CSE Lab 05 HeapSort Solution

Implement the heapsort algorithm for sorting an array of integers. Input structure Each case starts with an integer number which indicates the number of elements to be sorted. Then, the elements follow, one per line. You can assume the input is correctly structured (i.e., no data are missing). Output structure Output the sorted sequence separeted by “;” (in non-decreasing order). Do not insert…

[tancong]

More about me

Thanks @koshkavinni​

Name: Minh

Zodiac: Sagittarius

Height: 5′6

Time: 6:29pm

Favourite band/artist: Myth & Roid and Yorushika (real weeb hour)

Song stuck in my head: Yorushika - Hitchcock

Last movie I saw: IT Chapter 2

Last thing I googled: Heapsort 

Other blogs: tancongx

Why this username: It means attack in Vietnamese. I use this username for everything.

Following: 1,454

Average amount of sleep: I try for 10 hours. But I usually only get 8.

Lucky number: Not sure. I like the number 17 though.

What I’m wearing: Long pants and a t-shirt. It’s hot.

Dream job: Working at Google I guess?

Dream trips: I like being home but I guess touring Europe sounds pretty fun.

Favorite food: Sushi!

Instruments I play: I used to play piano and guitar. I don’t know how anymore. I can play the kazoo though.

Eye color: Brown!

Hair color: Brunette

Aesthetics: Anime tiddies

Languages I speak: English and Vietnamese

Most iconic song: Yakuza 0 - Baka Mitai

Random fact: I own quite a few swords but only 1 anime figure that my friend gifted me and 0 body pillow. Am I even a real weeb?

[fortunatelycoldengineer]

Radix Sort Algorithm . . . . for more information http://bit.ly/3M1l47Q check the above link

[homeworkdave]

Homework 5. Better Sorts

Homework 5. Better Sorts

EE3980 Algorithms Homework 5. Better Sorts It has been shown that heap sort (Algorithm 2.2.19), merge sort (Algorithm 3.2.1) and quick sort (Algorithm 3.2.5) have better performances than other sorts. In this homeowrk, please implement these three sorting algorithms in C and compare their efficiency using the data sets in hw01. The function declarations should be as following: void HeapSort(char…

[winsple]

DATA STRUCTURE

Facts, statistics, and information that are collected are called data. It is more of a technical sense with quantitative and qualitative variables. In today’s business world data is the most powerful tool. Data helps to compete and move forward in this challenging world. Data empowers you to make empowered decisions, identify problem and develop accurate theories. Having a smart data collection system helps to save time.

Organizing the given data with the help of computer is called data structure. Data structure is the efficient way of using data. In this article we will see in detail about data structure and its importance.

Here is a real-world example, if you go to a library with lacks of books and you need to find a book written in 18th century like PAMELA you will have to go to the novel section and find the romance or fiction section through chronological order but if you have those as a data it takes seconds !! if you have books as your data or any information it takes very less time than the manual method. This is how powerful data structure is.

Having considered the value of data structure the digital world processes data which is increasing every year. The best estimate suggests that at least 2.5 quintillion bytes of data is produced every day that is 2.5 followed by staggering 18 zeros!! 90% of the worlds data is produced in last 2 years alone. Thus this industry is growing in a tremendous rate.

 1.  LINEAR – arrays, list

2.  TREE – binary, heaps, space partitioning etc.

3.  HASH- distributed hash table, hash tree etc.

4.  Graphs- decision, directed, acyclic etc.

Array - it is a finite group of data which is contiguously allocated like sharing a common border

Linked list – it is not like array; it is not determined by contiguous memory allocation. It consists of two parts

1.  The data

2.  A pointer

Tree – it is the simplest way to show hierarchical representation. With the root or origin to sub associates or linked nodes.

1.  Binary tree

2.  Red -black tree

3.  Heap

4.  Abstract syntax tree

HASH TABLE- it is a data structure which is capable of mapping keys to values . better the hash generation the more distributed the keys will be.

GRAPH -  it guides the implementation of data structure. It consists of:

1.nodes

2. edges

SORTING ALGORITHMS:

Sorting algorithms is also known as ordering or organizing the data. It is one of the most common task in which disorganized data is converted to structured form. some of the most popular sorting algorithms are:

1.  Introsort

2.  Bubble

3.  Merge sort

4.  Quicksort

5.  Heapsort

CAREER: To become a data scientist and get into this field of data structure and algorithms you can follow one simple step. Get certified on data science course provided by winsple.

 WinSple ! SMART Learning

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