Cod sursa(job #2208529)

Utilizator ana_valeriaAna Valeria Duguleanu ana_valeria Data 30 mai 2018 09:39:00
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.15 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream f ("cautbin.in");
ofstream g ("cautbin.out");
int v[100005],n;
int caz2(int x)
{
    int st,dr,poz,pp,mijl;
    st=1;
    dr=n;
    poz=-1;
    while (st<=dr)
    {
        mijl=(st+dr)/2;
        if (v[mijl]>x)
            dr=mijl-1;
        else
        {
            poz=mijl;
            st=mijl+1;
        }
    }
    return poz;
}
int caz3(int x)
{
    int st,dr,poz,pp,mijl;
    st=1;
    dr=n;
    poz=-1;
    while (st<=dr)
    {
        mijl=(st+dr)/2;
        if (v[mijl]<x)
            st=mijl+1;
        else
        {
            poz=mijl;
            dr=mijl-1;
        }
    }
    return poz;
}
int main()
{
    int i,m,cer,x,t;
    f>>n;
    for (i=1; i<=n; i++)
        f>>v[i];
    f>>m;
    for (i=1; i<=m; i++)
    {
        f>>cer>>x;
        if (cer==0)
        {
            t=caz2(x);
            if (v[t]==x)
                g<<t<<"\n";
            else
                g<<-1<<"\n";
        }
        if (cer==1)
            g<<caz2(x)<<"\n";
        if (cer==2)
            g<<caz3(x)<<"\n";
    }
    return 0;
}