- published: 31 Mar 2012
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In mathematics and computer science, an algorithm (^{i}/ˈælɡərɪðəm/ AL-gə-ri-dhəm) is a self-contained step-by-step set of operations to be performed. Algorithms exist that perform calculation, data processing, and automated reasoning.
The words 'algorithm' and 'algorism' come from the name al-Khwārizmī. Al-Khwārizmī (Persian: خوارزمي, c. 780-850) was a Persian mathematician, astronomer, geographer, and scholar.
An algorithm is an effective method that can be expressed within a finite amount of space and time and in a well-defined formal language for calculating a function. Starting from an initial state and initial input (perhaps empty), the instructions describe a computation that, when executed, proceeds through a finite number of well-defined successive states, eventually producing "output" and terminating at a final ending state. The transition from one state to the next is not necessarily deterministic; some algorithms, known as randomized algorithms, incorporate random input.
C (/ˈsiː/, as in the letter c) is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, and therefore it has found lasting use in applications that had formerly been coded in assembly language, including operating systems, as well as various application software for computers ranging from supercomputers to embedded systems.
C was originally developed by Dennis Ritchie between 1969 and 1973 at AT&T Bell Labs, and used to re-implement the Unix operating system. It has since become one of the most widely used programming languages of all time, with C compilers from various vendors available for the majority of existing computer architectures and operating systems. C has been standardized by the American National Standards Institute (ANSI) since 1989 (see ANSI C) and subsequently by the International Organization for Standardization (ISO).
Quicksort (sometimes called partition-exchange sort) is an efficient sorting algorithm, serving as a systematic method for placing the elements of an array in order. Developed by Tony Hoare in 1959, with his work published in 1961, it is still a commonly used algorithm for sorting. When implemented well, it can be about two or three times faster than its main competitors, merge sort and heapsort.
Quicksort is a comparison sort, meaning that it can sort items of any type for which a "less-than" relation (formally, a total order) is defined. In efficient implementations it is not a stable sort, meaning that the relative order of equal sort items is not preserved. Quicksort can operate in-place on an array, requiring small additional amounts of memory to perform the sorting.
Mathematical analysis of quicksort shows that, on average, the algorithm takes O(n log n) comparisons to sort n items. In the worst case, it makes O(n^{2}) comparisons, though this behavior is rare.
In computer science, a search algorithm is an algorithm for finding an item with specified properties among a collection of items which are coded into a computer program, that look for clues to return what is wanted. The items may be stored individually as records in a database; or may be elements of a search space defined by a mathematical formula or procedure, such as the roots of an equation with integer variables; or a combination of the two, such as the Hamiltonian circuits of a graph.
Algorithms for searching virtual spaces are used in constraint satisfaction problem, where the goal is to find a set of value assignments to certain variables that will satisfy specific mathematical equations and inequations. They are also used when the goal is to find a variable assignment that will maximize or minimize a certain function of those variables. Algorithms for these problems include the basic brute-force search (also called "naïve" or "uninformed" search), and a variety of heuristics that try to exploit partial knowledge about structure of the space, such as linear relaxation, 'constraint generation, and constraint propagation.
In computer science, a binary search or half-interval search algorithm finds the position of a target value within a sorted array. The binary search algorithm can be classified as a dichotomic divide-and-conquer search algorithm and executes in logarithmic time.
The binary search algorithm begins by comparing the target value to the value of the middle element of the sorted array. If the target value is equal to the middle element's value, then the position is returned and the search is finished. If the target value is less than the middle element's value, then the search continues on the lower half of the array; or if the target value is greater than the middle element's value, then the search continues on the upper half of the array. This process continues, eliminating half of the elements, and comparing the target value to the value of the middle element of the remaining elements - until the target value is either found (and its associated element position is returned), or until the entire array has been searched (and "not found" is returned).
Concepts of Algorithm, Flow Chart & C Programming by Prof. Wongmulin | Dept. of Computer Science Garden City College-Bangalore
For assignments and comprehensive in-video quizzes, watch these videos or enroll for free on http://mentorsnet.org/course/welcome?course_id=33
Watch Sample Class Recording: http://www.edureka.co/c-programming-datastructure-course?utm_source=youtube&utm_medium=referral&utm_campaign=basic-algorithm C programming is a computer programming language that allow users to create instructions for a computer to follow. While C has a slightly more cryptic style than some other programming languages, it's fairly easy to learn and allows you to read and write code for many different platforms. The topics discussed in the video are: 1.Understanding Algorithms 2.Linear Search 3.Binary Search 4.Selection Sort 5.Bubble Sort 6.Quick Sort Edureka is a New Age e-learning platform that provides Instructor-Led Live, Online classes for learners who would prefer a hassle free and self paced learning environment, accessible from any part of the world...
Concepts - Algorithm - Pseudocode - Comments - Basic Arithmetic Operations - Type Conversion - Integer Division
This is the 2nd Episode of the series " C Programming Tutorials " by a faculty from IIT Kanpur. No prerequisite is needed to attend this course. After the end of this course you will be very good in C Programming. In this Episode, you are going to learn the following points: 1. Example of an Algorithm 2. GCD Algorithm 3. Flow Chart of the GCD Algorithm iitlecture tipstricksndhacks
Change making C program using a greedy algorithm. Making least amount of money/coin change using the USD coin set {25,10,5,1} C-Programming Tutorial: https://www.udemy.com/c-programming-for-complete-beginners/learn/v4/overview Please Subscribe ! ►Become a Patreot: patreon.com/randerson112358 ►Website: http://everythingcomputerscience.com/algorithms/Greedy_Algorithm.html ►Support this channel get C-Programming Book: https://www.amazon.com/gp/product/0131103628/ref=as_li_tl?ie=UTF8&tag=everythingc06-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=0131103628&linkId=c6b8768d5fe382a757ab85da5c1686ae Get the code here: https://github.com/randerson112358/C-Programs/blob/master/greedy_efficient.c
Change making C program using a greedy algorithm. Making money/coin change using the USD coin set {25,10,5,1} C-Programming Tutorial: https://www.udemy.com/c-programming-for-complete-beginners/learn/v4/overview Please Subscribe ! ►Become a Patreot: patreon.com/randerson112358 ►Website: http://everythingcomputerscience.com/algorithms/Greedy_Algorithm.html ►Support this channel get C-Programming Book: https://www.amazon.com/gp/product/0131103628/ref=as_li_tl?ie=UTF8&tag=everythingc06-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=0131103628&linkId=c6b8768d5fe382a757ab85da5c1686ae Get the code here: https://github.com/randerson112358/C-Programs/blob/master/greedy.c
Analysis Of Algorithms------NQueen's Problem using Backtracking (Algorithm & C-code Explanation) In this video i've given a quick recap of the Nqueen problem and then moved on to explain the C-code implmentation. I've also added an output screen at the end so that you know how its supposed to work! C-Code of Nqueens Problem---http://www.c4learn.com/c-programs/c-progran-to-implement-n-queens-problem.html Thanks again for watching ! If you liked it pls make it a point to comment below. Keeps me going :)
So this is an implementation of Prim's Algorithm, which finds the minimum spanning tree's weight in a graph. I hope that my video was helpful. Please Subscribe for more! You can also see the development of Kruskal's Algorithm (again for MSTs) here: https://www.youtube.com/watch?v=7gD5liN3HCw&t=29s
Shortest path algorithms series, and in this video I show you guys how to develop Dijkstra's algorithm. This algorithm is the most commonly used one to solve the shortest path problem by most of the programmers and it belongs to the category of greedy algorithms since it gets always the closest node. Links for more shortest path algorithms: Explaining video: https://www.youtube.com/watch?v=18r4jeX61IQ Bellman-Ford: coming soon Floyd-Warshall: coming soon Please subscribe to become a fellow programmer and support the channel!
here is a little discussion about bisection method . the algo and the program.
My implementation of the Advanced Encryption Standard algorithm. (maximum block size 128 & key sizes: 128, 192, 256) • Support me on Patreon: http://www.patreon.com/Zer0Mem0ry • Facebook: https://www.facebook.com/Zer0Mem0ry • Twitter: https://www.twitter.com/Zer0Mem0ry What is AES? AES is abbreviation of "Advanced Encryption Standard", it was chosen to replace it's predecessor DES (Data Encryption Standard) by NIST ( National Institute of Standards and Technology) and has been adapted by the US government and most developers world wide. AES is considered the most secure encryption algorithm today, while it also being very lightweight and efficient. AES has block size of 128bits, meaning that if more data is wanted to be encrypted, it must be encrypted block by block. AES has 3 possible...
In this tutorial you can clear some basic concept of divide and conquer algorithm. There is merge sort algorithm and a small visualisation of merge sort technique using GIF photo. At last there the merge sort C code for better understanding...
Concepts of Algorithm, Flow Chart & C Programming by Prof. Wongmulin | Dept. of Computer Science Garden City College-Bangalore
For assignments and comprehensive in-video quizzes, watch these videos or enroll for free on http://mentorsnet.org/course/welcome?course_id=33
Watch Sample Class Recording: http://www.edureka.co/c-programming-datastructure-course?utm_source=youtube&utm_medium=referral&utm_campaign=basic-algorithm C programming is a computer programming language that allow users to create instructions for a computer to follow. While C has a slightly more cryptic style than some other programming languages, it's fairly easy to learn and allows you to read and write code for many different platforms. The topics discussed in the video are: 1.Understanding Algorithms 2.Linear Search 3.Binary Search 4.Selection Sort 5.Bubble Sort 6.Quick Sort Edureka is a New Age e-learning platform that provides Instructor-Led Live, Online classes for learners who would prefer a hassle free and self paced learning environment, accessible from any part of the world...
Concepts - Algorithm - Pseudocode - Comments - Basic Arithmetic Operations - Type Conversion - Integer Division
This is the 2nd Episode of the series " C Programming Tutorials " by a faculty from IIT Kanpur. No prerequisite is needed to attend this course. After the end of this course you will be very good in C Programming. In this Episode, you are going to learn the following points: 1. Example of an Algorithm 2. GCD Algorithm 3. Flow Chart of the GCD Algorithm iitlecture tipstricksndhacks
Change making C program using a greedy algorithm. Making least amount of money/coin change using the USD coin set {25,10,5,1} C-Programming Tutorial: https://www.udemy.com/c-programming-for-complete-beginners/learn/v4/overview Please Subscribe ! ►Become a Patreot: patreon.com/randerson112358 ►Website: http://everythingcomputerscience.com/algorithms/Greedy_Algorithm.html ►Support this channel get C-Programming Book: https://www.amazon.com/gp/product/0131103628/ref=as_li_tl?ie=UTF8&tag=everythingc06-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=0131103628&linkId=c6b8768d5fe382a757ab85da5c1686ae Get the code here: https://github.com/randerson112358/C-Programs/blob/master/greedy_efficient.c
Change making C program using a greedy algorithm. Making money/coin change using the USD coin set {25,10,5,1} C-Programming Tutorial: https://www.udemy.com/c-programming-for-complete-beginners/learn/v4/overview Please Subscribe ! ►Become a Patreot: patreon.com/randerson112358 ►Website: http://everythingcomputerscience.com/algorithms/Greedy_Algorithm.html ►Support this channel get C-Programming Book: https://www.amazon.com/gp/product/0131103628/ref=as_li_tl?ie=UTF8&tag=everythingc06-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=0131103628&linkId=c6b8768d5fe382a757ab85da5c1686ae Get the code here: https://github.com/randerson112358/C-Programs/blob/master/greedy.c
Analysis Of Algorithms------NQueen's Problem using Backtracking (Algorithm & C-code Explanation) In this video i've given a quick recap of the Nqueen problem and then moved on to explain the C-code implmentation. I've also added an output screen at the end so that you know how its supposed to work! C-Code of Nqueens Problem---http://www.c4learn.com/c-programs/c-progran-to-implement-n-queens-problem.html Thanks again for watching ! If you liked it pls make it a point to comment below. Keeps me going :)
So this is an implementation of Prim's Algorithm, which finds the minimum spanning tree's weight in a graph. I hope that my video was helpful. Please Subscribe for more! You can also see the development of Kruskal's Algorithm (again for MSTs) here: https://www.youtube.com/watch?v=7gD5liN3HCw&t=29s
Concepts of Algorithm, Flow Chart & C Programming
https://www.udemy.com/data-structures-and-algorithms-in-c/?couponCode=YOUTUBE15 Deepali Srivastava
شرح بالعربي لمادة data structures and algorithms
This is one of my classes in Russian language
Concepts of Algorithm, Flow Chart & C Programming by Prof. Wongmulin | Dept. of Computer Science Garden City College-Bangalore