CODEWITHSUNDEEP
c++arraysvector
remi
remi

Reputation: 1047

C++ check if vector a includes elements of vector b

Could anyone tell me the simplest way to check if a vector A, includes an element of vector B?

it would be sort of:

   for every element in A (
   if (none of the elements in B exist in A) do something and B changes
   else (do nothing) )

I guess it could be done by with some loops. But is there a function that would make it easier?

Upvotes: 1

Views: 380

Answers (2)

APD
APD

Reputation: 1519

The STL includes function is designed for exactly this.

http://www.cplusplus.com/reference/algorithm/includes/

Upvotes: 2

Jarod42
Jarod42

Reputation: 217275

You std::sort them, then use std::set_intersection (or similar algorithm) to have included elements.

Upvotes: 0

Related Questions