boost::algorithm::erase_nth — Erase nth algorithm.
template<typename SequenceT, typename CollectionT> void erase_nth(SequenceT & Input, const CollectionT & Search, unsigned int Nth);
Remove the Nth occurence of the substring in the input. The input sequence is modified in-place.
Parameters
An input string
An index of the match to be replaced. The index is 0-based.
A substring to be searched for.
