题目描述
STL中vector()的掌握与运用
样例
高精度除法
算法1
C++ 代码
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
const int N = 100010;
vector<int> div(vector<int> &A, int b, int &r)
{
vector<int> C;
r = 0;
for(int i = A.size() - 1; i >= 0; i -- )
{
r = r * 10 + A[i];
C.push_back(r / b);
r %= b;
}
reverse(C.begin(), C.end());
while(C.size() > 1 && C.back() == 0) C.pop_back();
return C;
}
int main()
{
string a;
int b;
cin >> a >> b;
vector<int> A;
for(int i = a.size() - 1; i >= 0; i -- ) A.push_back(a[i] - '0');
int r; //余数r
auto C = div(A, b, r);
for(int i = C.size() - 1; i >= 0; i -- ) printf("%d", C[i]);
cout << endl << r << endl;
return 0;
}