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## Function template find_nth

boost::algorithm::find_nth — Find n-th algorithm.

## Synopsis

    template<typename Range1T, typename Range2T>
      iterator_range< typename range_iterator< Range1T >::type >
      find_nth(Range1T & Input, const Range2T & Search, int Nth);

## Description

Search for the n-th (zero-indexed) occurrence of the substring in the input.

Parameters: |
`Input` | A string which will be searched.
`Nth` | An index (zero-indexed) of the match to be found. For negative N, the matches are counted from the end of string.
`Search` | A substring to be searched for.
Returns: | An `iterator_range` delimiting the match. Returned iterator is either `Range1T::iterator` or `Range1T::const_iterator`, depending on the constness of the input parameter.