Cod sursa(job #1846929)

Utilizator popicabogdanPopica Bogdan popicabogdan Data 14 ianuarie 2017 10:09:52
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1.25 kb
#include <iostream>
#include <fstream>
using namespace std;
int a[1003];

//caut pozitia cea mai mare a lui x
int CB0(int st, int dr, int x)
{
    int mij, p;
    p=-1;
    while(st<=dr)
    {
        mij=(st+dr)/2;
        if(x==a[mij])
        {
            p=mij;
            st=mij+1;
        }
        else if (x<a[mij]) dr=mij-1;
        else st=mij+1;
    }
}

int CB1(int st, int dr, int x)
{
    int mij, p;
    p=-1;
    while(st<=dr)
    {
        mij=(st+dr)/2;
        if(a[mij]<=x)
        {
            p=mij;
            st=mij+1;
        }
        else dr=mij-1;

    }
}

int CB2(int st, int dr, int x)
{
    int mij, p;
    p=-1;
    while(st<=dr)
    {
        mij=(st+dr)/2;
        if(a[mij]>=x)
        {
            p=mij;
            dr=mij-1;
        }
        else st=mij+1;

    }
}



int main()
{
    int n,i,Q,op,x;
    ifstream fin ("CB1");
    ofstream fout ("CB1.out");
    fin>>n;
    for(i=1;i<=n;i++)
        fin>>a[i];
    fin>>Q;
    for(i=1;i<=Q;i++)
    {
        fin>>op>>x;
        if(op=0) fout<<CB0(i,n,x)<<"\n";
        if(op=1) fout<<CB1(i,n,x)<<"\n";
        if(op=2) fout<<CB2(i,n,x)<<"\n";
    }


    fin.close();
    fout.close();

    return 0;
}