第一次代码

#include <iostream>
using namespace std;
#include <string>
#include <unordered_map>
#include <algorithm>


int main()
{
    string num1 = "1+-1i";
    string num2 = "1+-1i";
    int n = num1.size(), m = num2.size();
    vector<int>first;
    vector<int>twist;
    string s;
    for (int i = 0; i < n; i++) {                
        if (num1[i] == '+'|| num1[i] == 'i') {
            first.push_back(atoi(s.c_str()));
            //cout << s << endl;
            s.erase(0, s.size());//删除字符串s从第pos个字符开始的n个字符
        }
        if (num1[i] != '+' &&  num1[i] != 'i') {
            s += num1[i];
        }        
    }
    cout << "first的元素为：";
    for (int i = 0; i < first.size(); i++) {
        cout << first[i]<<" ";
    }
    cout << endl;

    s.erase(0, s.size());
    for (int i = 0; i < m; i++) {
        if (num2[i] == '+' || num2[i] == 'i') {
            twist.push_back(atoi(s.c_str()));
            //cout << s << endl;
            s.erase(0, s.size());//删除字符串s从第pos个字符开始的n个字符
        }
        if (num2[i] != '+' && num2[i] != 'i') {
            s += num2[i];
        }
    }
    cout << "twist的元素为：";
    for (int i = 0; i < twist.size(); i++) {
        cout << twist[i] <<" ";
    }
    cout << endl;

    system("pause");
    return 0;
}
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第二次代码

easy