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Cod sursa(job #385073)
#include<iostream>
#include<fstream>
using namespace std;
int st(int i)
{
return 2*i;
}
int dr(int i)
{
return 2*i+1;
}
void schimb(int &a, int &b)
{
int ux;
ux=a;
a=b;
b=ux;
}
void check(int a[500000], int i, int n)
{
int max,s,d;
max=i;
s=st(i);
d=dr(i);
if(a[s]<a[max] && s<=n )max=s;
if(a[d]<a[max] && d<=n )max=d;
if(max!=i ){schimb(a[max],a[i]);
;check(a,max,n);}
}
void insertie(int a[500000],int n)
{
int i,j,key;
for(j=2;j<=n;j++)
{
key = a[j];
i=j-1;
while(i>0 && a[i]>key)
{
a[i+1] = a[i];
--i;
}
a[i+1] = key;
}
}
int main()
{int n,i,a[500000];
//cin>>n;
ifstream f ("algsort.in");
ofstream o ("algsort.out");
f>>n;
for(i=1;i<=n;i++)
f>>a[i];
for(i=n/2;i>=1;i--)
check(a,i,n);
insertie(a,n);
for(i=1;i<=n;i++)
o<<a[i]<<" ";
return 0;}