Question

Need help with this Home wrok question pls.

For this exercise you will write code or verifying usernames against a list of existing usernames. This task is known as whitelisting. It is also used as part of spam filters: spam filters that come with email clients have both whitelists and blacklists of senders and keywords to look for in emails. You are given a list of usernames that are trying to get access to a system and you need to verify that those users are in the list of existing usernames. You will return a list of only those that are. Write a function that will take two string vectors as arguments: usernames and existingusers and it will return a vector with the list of values in the first vector that are also in the second vector. The signature of the function is as follows. vector validateUsers (vector username, vector existingusers) Input and Output example usernames existingusers output {Ben, Matt, Jen, Kim, Tom} {Ben, Tim, Tom, Max, Zion, Rose, Karl, kim} {Ben, kim, Tom} {Ben, Tom, Jen} {Ben, Tim, Tom, Max, Zion, Rose, Karl, kim} {Ben, Tom} Write a main program to test your function with one of the examples above. PARTIAL SOLUTION: # include < vector > # include < iostream > include namespace std: vector < string > v1 = {"Ben", "Tom", "Jen"}: vector < string > v2 = {Ben, Tim, Tom, Max, Zion, Rose, Karl, Kim, Tom}: vector < string > result = validateUsers(v1, v2): for (int i = 0, i < result size(): i++) { cout < < result[i]: } }

Answer 1

#include <iostream>
#include <vector>
#include <string>
using namespace std;
void validateuser(vector<string>,vector<string>);

int main()
{
vector<string> v1;
vector<string> v2;
v1.push_back("ben");
v1.push_back("tom");
v1.push_back("jen");
//-------------------------
v2.push_back("ben");
v2.push_back("tim");
v2.push_back("tom");
v2.push_back("max");
v2.push_back("jeon");
v2.push_back("jos");
v2.push_back("karl");
v2.push_back("kim");
  
  
  
validateuser(v1,v2);

return 0;
}
void validateuser(vector<string> v1,vector<string> v2){
for(int i=0;i<v1.size();i++){
for(int j=0;j<v2.size();j++){
if(v1[i].compare(v2[j])==0){
cout<<v1[i]<<endl;
break;
}
}
}
  
}

output:

Computer Science ques: Χ nline C+. Compiler- X 、00 Vector in C++ STL-Gee >. w string::compare-C++ RX c..-How to pass a vec X - С Secure | https://www.onlinegdb.com/online_c++-compiler Run DebugStop Share H Save( Beautify Language C++ OnlineGDB beta main.cpp online compiler and debugger for dct code. compile. run. debug. share IDE My Projects 38 void validateuser(vector string v1,vector<string v2) 39 40 41 42 43 (int1-0,1 v1.size();ǐ ){ (int j Θ;J V2.size();j.){ or if(v1[i].compare (v2[j]) e)t cout <<v1[i]<<endl; input tom Program finished with exit code 0 Earn Mone ONLINE Press ENTER to exit console Get paid to click ads and take surveys! About FAQ Blog Terms of Use Contact Us GDB Tutorial Online JavalPython Debugger 2017 GDB Online O Type here to search 7:51 PM 44) 8/31/2017 ^

/* main function call validate userfunction
and validate userfunction loop through both the vectors and print out the string which contains both in first and second vector
*/