Question:
http://www.lintcode.com/en/problem/print-numbers-by-recursion/
Print numbers from 1 to the largest number with N digits by recursion.
Answer:
#include
using namespace std;
void PrintNumber(char* number, int len) {
bool isb0 = true;
for (int i = 0; i < len; i++) {
if (isb0 && number[i] != '0')
isb0 = false;
if