2.1.17—线性表—Plus One

描述

Given a number represented as an array of digits, plus one to the number.

#include<iostream>using namespace std;int PlusOne(int a[], int n){if (a == NULL || n <= 0)return 0;int flag = 1;for (int i = n-1; i >=0; i--){a[i] +=flag;if (a[i] >= 10){a[i] -= 10;flag = 1;}else{flag = 0;break;}}return flag;}int main(){const int n = 6;int a[n] = { 9, 9, 9, 9, 9,8 };int flag = PlusOne(a, n);if (flag != 0){cout << flag << " ";for (int i = 0; i < n; i++)cout << a[i] << " ";cout << endl;}else{for (int i = 0; i < n; i++)cout << a[i] << " ";cout << endl;}}