CODEWITHSUNDEEP
c++algorithmvectorcount
mhm
mhm

Reputation: 313

How to use Count in 2D Vector

I have a 2D vector of strings and want to count how many times a certain word is repeated. For example:

#include <vector>
#include <string>
#include <algorithm>
using namespace std;

int main()
{
    vector< vector<string> > vec(4, vector<string>(4, "word") );
    count( vec.begin(), vec.end(), "certain word" );
}

But the above gives errors. How can I do this?

Upvotes: 0

Views: 2314

Answers (1)

Ron
Ron

Reputation: 2019

You need to run count on search individual vector and sum the results:

#include <vector>
#include <string>
#include <algorithm>
using namespace std;

int main()
{
    vector< vector<string> > vec(4, vector<string>(4, "string of words") );
    size_t sum = 0;
    for(auto& v: vec) {
        sum += count( v.begin(), v.end(), "certain word" );
    }
}

Upvotes: 3

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