Given two numbers represented as strings, return multiplication of the numbers as a string.

Note: The numbers can be arbitrarily large and are non-negative.

class Solution {public:    void Plus(string& a,string& b,string& temp){        int small=min(a.length(),b.length());        bool flag=false;        int i=0;        for(;i
      
       '9'){                temp[i]-=10;                flag=true;            }            else{                flag=false;            }        }        while(i
       
        '9'){                temp[i]-=10;                flag=true;            }            else{                flag=false;            }            i++;        }        while(i
        
         '9'){                temp[i]-=10;                flag=true;            }            else{                flag=false;            }            i++;        }        if(flag){            temp[i]='1';            i++;        }        a.resize(i);        for(int j=0;j