Cod sursa(job #1527521)

Utilizator Andrei121Andrei Ghigheci Andrei121 Data 18 noiembrie 2015 11:36:10
Problema Cautare binara Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 1.21 kb
#include <fstream>

using namespace std;

ifstream in ("cautbin.in");
ofstream out ("cautbin.out");

int v[100001];

int cautbin0(int x , int n)
{
    int i , pas;
    pas=1<<16;
    i=0;
    while(pas!=0)
    {
        if(i+pas <=n and v[i+pas]==x)
        {
            i+=pas;
        }
        pas/=2;
    }
    if (v[i] != x)
        return -1;
    return i;
}

int cautbin1 (int x , int n)
{
    int i , pas,k;
    pas=1<<16;
    i=0;
    while(pas!=0)
    {
        if(v[i+pas]<=x and i+pas<=n)
        {
            i+=pas;
        }
        pas/=2;
    }
    return i;
}
int cautbin2 (int x , int n)
{
    int i , pas;
    pas=1<<16;
    i=0;
    while(pas!=0)
    {
        if(v[i+pas]<x and i+pas <=n)
        {
            i+=pas;
        }
        pas/=2;
    }
    return i+1;
}


int main()
{
    int n,i,m,sol,tip;
    in >> n;
    for(i=1; i<=n; i++)
    {
        in >> v[i];
    }
    in >> m;
    for(i=1; i<=m; i++)
    {
        in >> tip >> sol ;
        if(tip==0)
        {
            out << cautbin0(sol,n) << '\n';
        }
        if(tip==1)
        {
            out << cautbin1(sol,n) << '\n';
        }
        if(tip==2)
        {
            out << cautbin2(sol,n) << '\n';
        }
    }
    return 0;
}