Cod sursa(job #2551998)

Utilizator CighiCighi Vasile Cighi Data 20 februarie 2020 14:39:30
Problema Cautare binara Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.47 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
int n,i,j,v[100005],k,p,mij,m,nr,x,poz;
int main()
{
    f>>n;
    for(i=1; i<=n; i++)
        f>>v[i];
    f>>m;
    for(k=1; k<=m; k++)
    {
        f>>nr;
        f>>x;
        if(nr==0)
        {
            p=-1;
            i=1;
            j=n;
            while(i<=j)
            {
                mij=(i+j)/2;
                if(v[mij]==x)
                {
                    poz=(i+j)/2;
                    i++;
                }
                else if(v[mij]>x)
                    j=mij-1;
                else
                    i=mij+1;
            }
            g<<poz<<endl;
        }
        else if(nr==1)
        {
            i=1;
            j=n;
            while(i<=j)
            {
                mij=(i+j)/2;
                if(v[mij]<=x)
                {
                    poz=(i+j)/2;
                    i++;
                }
                else
                    j=mij-1;
            }
            g<<poz<<endl;
        }
        else
        {
            i=1;
            j=n;
            while(i<=j)
            {
                mij=(i+j)/2;
                if(v[mij]>=x)
                {
                    poz=(i+j)/2;
                    j--;
                }
                else
                    i=mij+1;
            }
            g<<poz<<endl;
        }
    }
}