Solutions to some problems are intrinsically recursive, and writing them in iterative fashion is difficult. Reverse also holds. Determine the example or recursive procedure and represent it as iterative procedure. Also, select the iterative procedure which you would re-write as recursive. Make sure to cite sources. Also, you require to understand algoithms you select so you can describe and assess them. Write down challenges did you face in process? How did you go about resolving them?