CODEWITHSUNDEEP
c++arrayselement
user2855326
user2855326

Reputation: 11

How to delete more than one element from an array in C++?

I have a question..How can I delete more than one elements from an one dimensional array in C++? Suppose I have an array A={1,3,5,8,9,7} and I want to delete suppose 3,5,7 from array A. Please kindly let me know if anyone knows any efficient algorithm.

Upvotes: 1

Views: 961

Answers (1)

SirGuy
SirGuy

Reputation: 10770

Arrays are not resizable in C++. The best option for a resizable container is std::vector which you would use as:

    std::vector<int> v = {1,3,5,8,9,7};

and then to remove elements by some predicate:

   auto new_end = std::remove_if(v.begin(), v.end(),
                                 std::bind(std::less<int>(), _1, 6));

But this only shuffles the elements around your vector so that they are all at the end. To the actually erase them, you need to call:

   v.erase(new_end, v.end());

Upvotes: 7

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