Iteration GudangMovies21 Rebahinxxi LK21

      Iteration is the repetition of a process in order to generate a (possibly unbounded) sequence of outcomes. Each repetition of the process is a single iteration, and the outcome of each iteration is then the starting point of the next iteration.
      In mathematics and computer science, iteration (along with the related technique of recursion) is a standard element of algorithms.


      Mathematics


      In mathematics, iteration may refer to the process of iterating a function, i.e. applying a function repeatedly, using the output from one iteration as the input to the next. Iteration of apparently simple functions can produce complex behaviors and difficult problems – for examples, see the Collatz conjecture and juggler sequences.
      Another use of iteration in mathematics is in iterative methods which are used to produce approximate numerical solutions to certain mathematical problems. Newton's method is an example of an iterative method. Manual calculation of a number's square root is a common use and a well-known example.


      Computing


      In computing, iteration is the technique marking out of a block of statements within a computer program for a defined number of repetitions. That block of statements is said to be iterated; a computer scientist might also refer to that block of statements as an "iteration".


      = Implementations

      =
      Loops constitute the most common language constructs for performing iterations. The following pseudocode "iterates" three times the line of code between begin & end through a for loop, and uses the values of i as increments.

      It is permissible, and often necessary, to use values from other parts of the program outside the bracketed block of statements, to perform the desired function.
      Iterators constitute alternative language constructs to loops, which ensure consistent iterations over specific data structures. They can eventually save time and effort in later coding attempts. In particular, an iterator allows one to repeat the same kind of operation at each node of such a data structure, often in some pre-defined order.
      Iteratees are purely functional language constructs, which accept or reject data during the iterations.


      = Relation with recursion

      =
      Recursions and iterations have different algorithmic definitions, even though they can generate identical effects/results. The primary difference is that recursion can be employed as a solution without prior knowledge as to how many times the action will have to repeat, while a successful iteration requires that foreknowledge.
      Some types of programming languages, known as functional programming languages, are designed such that they do not set up a block of statements for explicit repetition, as with the for loop. Instead, those programming languages exclusively use recursion. Rather than call out a block of code to be repeated a pre-defined number of times, the executing code block instead "divides" the work to be done into a number of separate pieces, after which the code block executes itself on each individual piece. Each piece of work will be divided repeatedly until the "amount" of work is as small as it can possibly be, at which point the algorithm will do that work very quickly. The algorithm then "reverses" and reassembles the pieces into a complete whole.
      The classic example of recursion is in list-sorting algorithms, such as merge sort. The merge sort recursive algorithm will first repeatedly divide the list into consecutive pairs; each pair is then ordered, then each consecutive pair of pairs, and so forth until the elements of the list are in the desired order.
      The code below is an example of a recursive algorithm in the Scheme programming language that will output the same result as the pseudocode under the previous heading.


      Education



      In some schools of pedagogy, iterations are used to describe the process of teaching or guiding students to repeat experiments, assessments, or projects, until more accurate results are found, or the student has mastered the technical skill. This idea is found in the old adage, "Practice makes perfect." In particular, "iterative" is defined as the "process of learning and development that involves cyclical inquiry, enabling multiple opportunities for people to revisit ideas and critically reflect on their implication."
      Unlike computing and math, educational iterations are not predetermined; instead, the task is repeated until success according to some external criteria (often a test) is achieved.


      See also


      Recursion
      Fractal
      Brute-force search
      Iterated function
      Infinite compositions of analytic functions


      References

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    Iteration – Aykut

    Iteration – Aykut's Blog

    Iteration Planning 101 Smartsheet, 44% OFF

    Iteration Planning 101 Smartsheet, 44% OFF

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    Iteration - Mission Control

    Iteration

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    What is an Iteration?

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    Iteration - definition of iteration by The Free Dictionary

    Iteration - definition of iteration by The Free Dictionary

    Iteration | Teaching Resources

    Iteration | Teaching Resources

    Iteration Planning for Modern Software Teams - 7pace

    Iteration Planning for Modern Software Teams - 7pace

    Iteration | Definition & Meaning

    Iteration | Definition & Meaning

    Iteration | Definition & Meaning

    Iteration | Definition & Meaning

    Iteration | Definition & Meaning

    Iteration | Definition & Meaning

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    "iteration " 和 "update" 和有什么不一样? | HiNative

    iteration Iterations are like different versions. Like Disney’s Cinderella is an iteration of the Cinderella story. An update is when it’s the same thing but improved. Like... a change. Something has been updated. However. In the examples you used they’re pretty much the same thing. First two versions of Siri is the same as the first two iterations. (Like A and B) But the first two ...

    【first iteration of the measure】とはどういう意味ですか? - 英 …

    【ネイティブが回答】「first iteration of the measure」ってどういう意味?質問に4件の回答が集まっています!Hinativeでは"英語(アメリカ)"や外国語の勉強で気になったことを、ネイティブスピーカーに簡単に質問できます。

    What is the difference between "repetition" and "iteration ...

    Apr 1, 2020 · Synonym for repetition These are similar but a slight difference. Repetition is doing the same thing over and over. Exactly the same thing each time. Some times you are not just trying to do the same thing over and over but you are trying to make a slight change each time to improve something. For example you tried 10 times to jump over the couch and each time you …

    What is the difference between "iteration - HiNative

    Apr 1, 2020 · Synonym for iteration Iterations are like different versions. Like Disney’s Cinderella is an iteration of the Cinderella story. An update is when it’s the same thing but improved. Like... a change. Something has been updated. However. In the examples you used they’re pretty much the same thing. First two versions of Siri is the same as the first two iterations. (Like A and B) …