Data Structure and algorithm 5: recursive (Recursion)Data Structure and algorithm 5: recursive (Recursion)
Preface
In the book Joel, chief of the programmer's tribe, who talks about software, the chapter "the school only teaches java risks" mentions
Definition: a sequence of numbers H0, H1 ,..., HN ,... If an integer N0 exists, when nn0 is used, you can use an equal sign (greater than or less than) to associate HN with some of the preceding HN (0i
There are three basic problems in the
Recursion is one of the basic modes for describing a process in a program computing process. we must be very careful before discussing the recursion problem, because recursion contains two aspects: one is a recursive computing process, the first is
Strings are the most data structure involved in programming, and the need to manipulate strings is almost ubiquitous. For example, to determine whether a string is a legitimate email address, although it can be programmed to extract the substring
Pattern matching algorithm for strings
The locating operation of a substring is often called a pattern match of a string, where T is called a pattern string .
General positioning function for substring position (Brute force)That's what
Remember earlier said to share with you "JavaScript design mode", the delay did not write because I lazy, really busy recently, busy work, busy travel (ah?) , the last few days free, and then the time to cash before the empty vernacular.
Before you
Another concept, derived from functional programming languages, joins the camp of C # and VB, which is called pattern-matching (Matching) features. At first glance, pattern matching acts like a block of switch/select statements, but it functions
The first step: marking
The first step in processing an expression is to convert it into a list of independent symbols. This is a simple step and not the focus of this article, so I've omitted a lot here.First, I've defined some tags (numbers are
In the book of computer programs and construction, we use recursion and iteration to replace loops. I have implemented it using C #. After verification, the results are correct. However, it is still a bit unclear about recursion and iteration, and
The derivation of templates in C + + is done by the compiler at compile time, so you can use templates to programmatically implement recursive algorithms that are known to be recursive in advance to compile time from run-time to compilation. The
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