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Algorithm C++ Erase . But we can’t add a method to vector. And you’ll need them in c++20 whenever you deal with containers other than. Vector Erase In C++ HackerRank Solution CodingBroz from www.codingbroz.com To shorten a string by a specific number of characters on either end, use the functions boost::algorithm::erase_head_copy() and boost::algorithm::erase_tail_copy(). This member function modifies size of vector. Boost::algorithm::erase_tail_copy is a function providing a feature to delete the tail of the string.