Cod sursa(job #898785)

Utilizator paul.mihaitaMihaita Paul paul.mihaita Data 28 februarie 2013 11:44:16
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1 kb
#include <fstream>
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int m,v[1000],i,n,intr,mij,trb;
int cautare_binara(int x)
{
    int st,dr,m;
    st=0;
    dr=n+1;
    m=0;
    while(v[m]!=x)
    {
        m=st+(dr-st)/2;
        if(v[m]>x)
            st=m+1;
        else
            dr=m-1;
    }
    return m;
}
int main()
{
    fin>>n;
    for(i=1;i<=n;i++)
        fin>>v[i];
    fin>>m;
    for(i=1;i<=m;i++)
    {
        int j;
        fin>>trb;
        fin>>intr;
        mij=cautare_binara(intr);
        j=mij;
        while(v[j]==v[mij])
            j++;
        j--;
        mij=j;
        if(trb==0)
            if(v[mij]!=intr)
                fout<<'-1'<<'\n';
            else
                fout<<mij;
        if(trb==1)
            fout<<mij;
        j=mij;
        if(trb==2)
        {
            while(v[j]==v[mij])
                mij--;
            fout<<mij+1;
        }
        fout<<'\n';
    }
    return 0;
}