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# Unused Items

Reports the unused items in a partial permutation.
Controller: CodeCogs Contents  C++

## Unknown

 std::vector unused_itemsunknown( int n int npart int* part )
Given a whole positive number , representing the size of the original permutation, a partial permutation is one of size that satisfies the following conditions: with

This function performs a linear search to find the unused items in the given partial permutation and returns them as a C++ vector object.

## References:

SUBSET, a C++ library of combinatorial routines, http://www.csit.fsu.edu/~burkardt/cpp_src/subset/subset.html

### Example 1

#include <codecogs/maths/combinatorics/permutations/unused_items.h>
#include <iostream>
int main()
{
int alpha = {1, 5, 2, 7, 9}, n = 10;
std::vector<int> result = Maths::Combinatorics::Permutations::unused_items(n, 5, alpha);
std::cout << "The unused values in the partial permutation Alpha are:";
std::cout << std::endl;
for (int i = 0; i < result.size(); i++)
std::cout << result[i] << " ";
std::cout << std::endl;
return 0;
}
Output:
The unused values in the partial permutation Alpha are:
3 4 6 8 10

### Returns

the unused items in the given partial permutation

### Authors

Lucian Bentea (August 2005)
##### Source Code

Source code is available when you agree to a GP Licence or buy a Commercial Licence.

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