algo/rotate1.cpp

The following code example is taken from the book
The C++ Standard Library - A Tutorial and Reference
by Nicolai M. Josuttis, Addison-Wesley, 1999
© Copyright Nicolai M. Josuttis 1999


#include "algostuff.hpp"
using namespace std;

int main()
{
    vector<int> coll;

    INSERT_ELEMENTS(coll,1,9);
    PRINT_ELEMENTS(coll,"coll:      ");

    // rotate one element to the left
    rotate (coll.begin(),      // beginning of range
            coll.begin() + 1,  // new first element
            coll.end());       // end of range
    PRINT_ELEMENTS(coll,"one left:  ");

    // rotate two elements to the right
    rotate (coll.begin(),      // beginning of range
            coll.end() - 2,    // new first element
            coll.end());       // end of range
    PRINT_ELEMENTS(coll,"two right: ");

    // rotate so that element with value 4 is the beginning
    rotate (coll.begin(),                     // beginning of range
            find(coll.begin(),coll.end(),4),  // new first element
            coll.end());                      // end of range
    PRINT_ELEMENTS(coll,"4 first:   ");
}