What is recursive algorithm?

If you cannot find any iterative algorithm for the problem, you have to settle for a recursive one. ...

a function that calls itself.

An algorithm is a set of instructions that do some task. An algorithm can recursive or non recursive calls. A recursive call is when a function calls itself. ...

Suck a dick until it works

If the condition has been reached.

Any algorithm, that refers to itself is recursive. Trivial example: gcd (a, b) := a if b=0 b if a=0 gcd (a mod b, b) if a>=b gcd (b mod a, a) if a<b ...

Linear search(a,item) n=length(a) for i=1 to n do if(a[i]==item) then return i end for return -1 ...

A recursive algorithm is an algorithm which calls itself with "smaller (or simpler)" input values, and which obtains the result for the current input by applying simple operations to the returned value for the smaller (or simpler) input. Heres a recursive algorithm to reverse a string char *rev(char str[],int pos1,int pos2) { if(pos1<pos2) { char temp=str[pos1]; str[pos1]=str[pos2]; str[pos2]=temp; return rev(str,pos1+1,pos2-1); } return str; } You can call this function like this char *r=rev("reverse it",0,9); ...

Step 1:- select first root node (t), start travelsing left contin

The formula, as far as I can see, is not appropriate for the algorithm.

n. A step-by-step problem-solving procedure, especially an established, recursive computational procedure for solving a problem in a finite number of steps. Read more: http://www.answers.com/topic/algorithm#ixzz1sURIfGSo ...

Recursive and non-recursive (also known as iterative) are simply two different approaches to solving a problem. Properly implemented, they should give the same result. If they do not, then something is wrong, and you should spend the time to figure out why. This is a generic answer, because the topic is too broad to answer here, as there are many different reasons that a particular algorithm may fail. ...

This is not a question, this is your homework. For a start, read this: https://en.wikipedia.org/wiki/Eight_queens_puzzle ...

int fact(n) { return (n == 2 ? 2 : n * fact(n-1)); }

Some problems cry out for recursion. For example, an algorithm might be defined recursively (e.g. the Fibonacci function). When an algorithm is given with a recursive definition, the recursive implementation is straight-forward. However, it can be shown that all recursive implementations have an iterative functional equivalent, and vice versa. Systems requiring maximum processing speed, or requiring execution within very limited resources (for example, limited stack depth), are generally better implemented using iteration. ...

int fact (int n) { if (n==0) return 1; return n* fact(n-1); }

Probably, you would see a stack. A recursive algorithm works by calling itself, each time with different data. So, to simulate that without actual recursion, you would need to track the changing data on some kind of stack. This would allow the data to be processed in a last-in-first-out order, which is how recursion works. ...

See if the fuction calls itself, if yes, it's recursive otherwise it's not a recursive function. ...

I don't want to spoil your fun, let it be sufficient to say that it is not trivial, but not that hard either. If you are to lazy to do it, consult wikipedia (attached link). ...

The term recursive refers to the recurrence or repetition.

Something that is recursive is something that repeats.

None of them is, obviously.

All recursive Languages are recursively enumerable. But not all the recursively enumerable languages are recursive. It is just like NP complete. ...

You overcome limitations of the stack in polygon filling, or in any other algorithm, far that matter, but using an iterative technique, rather than a recursive technique. Recursion is quite useful, and can simplify algorithm design. Polygon filling, however, is a class of algorithm can potentially have a very deep recursion depth. This causes stress on the stack, hence the need for iteration. ...

no it is not recursive