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recursion    
递归,循环

递归,循环

recursion
递回

recursion
n 1: (mathematics) an expression such that each term is
generated by repeating a particular mathematical operation

Recursion \Re*cur"sion\ (-sh?n), n. [L. recursio. See {Recur}.]
The act of recurring; return. [Obs.] --Boyle.
[1913 Webster]

When a {function} (or {procedure})
calls itself. Such a function is called "recursive". If the
call is via one or more other functions then this group of
functions are called "mutually recursive".

If a function will always call itself, however it is called,
then it will never terminate. Usually however, it first
performs some test on its arguments to check for a "base case"
- a condition under which it can return a value without
calling itself.

The {canonical} example of a recursive function is
{factorial}:

factorial 0 = 1
factorial n = n * factorial (n-1)

{Functional programming languages} rely heavily on recursion,
using it where a {procedural language} would use {iteration}.

See also {recursion}, {recursive definition}, {tail recursion}.

[{Jargon File}]

(1996-05-11)


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英文字典中文字典相关资料:


  • Recursion - Wikipedia
    Recursion occurs when the definition of a concept or process depends on a simpler or previous version of itself [1] Recursion is used in a variety of disciplines ranging from linguistics to logic
  • Pioneering AI Drug Discovery | Recursion
    The Recursion OS drug discovery and development platform has yielded an advanced pipeline of potential first-in-class and best-in-class treatments for conditions with high unmet need including aggressive cancers and rare diseases
  • Introduction to Recursion -
    Recursion isn’t always the best way to solve a problem, but we will soon see problems that would be very, very hard to do without recursion (we’re looking at simple examples now)
  • How Does Recursion Work? Explained with Code Examples
    Recursion involves breaking down a problem into smaller pieces to the point that it cannot be further broken down You solve the small pieces and put them together to solve the overall problem
  • Recursion - from Wolfram MathWorld
    Computer Science Algorithms Recursion Recursion A recursive process is one in which objects are defined in terms of other objects of the same type Using some sort of recurrence relation, the entire class of objects can then be built up from a few initial values and a small number of rules The Fibonacci numbers are most commonly defined
  • RECURSION Definition Meaning - Merriam-Webster
    This elliptical, enigmatic sentence, with its palindromic form (not unlike that of the Heart Sutra), signals the main thrust of Pau’s work, which employs structures of looping, repetition, and recursion to explore the space of ambiguity and uncertainty





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