Here is a function that prints all the integers in reverse order until 0 starting with the value in variable 'a.
function countdown(integer a)
{
while (a 0)
{
print( a )
a = a - 1
}
}
Rewrite this same function using recursion.
Hint: remember that a recursive function is one defined in terms of itself. Here is a way of defining countdown recursively:
Printing a countdown from any integer is the same as printing just that integer and then printing a countdown starting with the next smaller integer, until you reach 0.

HELP??

Question

Here is a function that prints all the integers in reverse order until 0 starting with the value in variable 'a.
  function countdown(integer a)
  {   
    while (a > 0)
   {  
       print( a )
       a = a - 1 
    }
  }  
Rewrite this same function using recursion. 
Hint: remember that a recursive function is one defined in terms of itself. Here is a way of defining countdown recursively: 
Printing a countdown from any integer is the same as printing just that integer and then printing a countdown starting with the next smaller integer, until you reach 0.

HELP??

anonymous · Answer

what programming language is this?it's not c, c++ java or python...

rsmith6559 · Answer

A recursive function to reverse a collection is a good project to learn recursion.  Remember that the recursion "unwinds" after it reaches the base case.