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Cod sursa(job #455528)
/*
* File: main.cpp
* Author: virtualdemon
*
* Created on May 13, 2010, 9:17 PM
*/
#include <cstdlib>
#include <fstream>
#include <iterator>
#define Nmax 500011
/*
*
*/
using namespace std;
int H[Nmax];
inline void DownHeap( int k, int N )
{
for( int son=2*k; son <= N; k=son, son*=2 )
{
if( son < N && H[son] < H[son+1] )
++son;
if( H[k] >= H[son] )
return;
swap( H[k], H[son] );
}
}
inline void HeapSort( int left, int right )
{
int i;
for( i=left+(right-left)/2-1; i >= left; --i )
DownHeap( i, right );
for( ; right >= left; )
{
swap( H[left], H[right] );
--right;
DownHeap( left, right );
}
}
int main(int argc, char** argv)
{
int N;
ifstream in( "algsort.in" );
in>>N;
copy( istream_iterator<int>(in), istream_iterator<int>(), H+1 );
HeapSort( 1, N );
ofstream out( "algsort.out" );
copy( H+1, H+N+1, ostream_iterator<int>( out, " " ) );
out<<'\n';
return (EXIT_SUCCESS);
}