Friday 10 December 2010

difference between iterative and recursive method




difference between iterative and recursive method
Iterative
Recursive
1.       Function calls some other function
Function calls itself
2.       Loops are used
If statement is used
3.       One function call is enough
Several function calls are required to get the result
4.       Fast
Slow
5.       Easy to write
Difficult to write
6.       We require a method or procedure to design iterative method
We require a formula to design a recursive method, it is very difficult to write if there is no formula
7.       No stacks are used
o/s used stacks during execution time





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