如何在C ++中比较两个向量的字符串内容

Question

I have two vectors and want to compare their contents (strings) but this does not work:

    vector<string>inwords = getInWords();
    vector<string>killwords = getKillWords();


    vector<string>::iterator it;
    vector<string>::iterator ut;

    for(it = inwords.begin(); it < inwords.end(); it++){
     for (ut = killwords.begin(); ut < killwords.end(); ut++) {
      if (*ut == *it){
       cout << "match" << endl;
      }
     }
    } 

I also tried the compare function:

    if (killwords[u].compare(inwords[i]) == 0)

My guess is that I need to overload the == operator, but I am not sure how to do that. Would be nice if you could help me out, as my google searches have not really gotten me anywhere. Cheers!

Answer 1

For what you're trying with your code you might want to use std::find_first_of . If you're trying to compare ranges for (un)equality you may want to look at std::mismatch or std::equal .

For anything else you want to achieve you better be more specific.

Answer 2

您的代码应该在两个向量之间的相交字符串上打印“ match”，对于相交应该可以正常工作，您可能需要检查字符串值本身，它可能包含空格