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## Function template replace_nth

boost::replace_nth — Replace nth algorithm.

## Synopsis

    // In header: <boost/algorithm/string/replace.hpp>

    template<typename SequenceT, typename Range1T, typename Range2T>
      void replace_nth(SequenceT & Input, const Range1T & Search, int Nth,
                       const Range2T & Format);

## Description

Replace an Nth (zero-indexed) match of the search string in the input with the format string. Input sequence is modified in-place.

Parameters: |
`Input` | An input string
`Search` | A substring to be searched for
`Nth` | An index of the match to be replaced. The index is 0-based. For negative N, matches are counted from the end of string.
`Format` | A substitute string