Cod sursa(job #2252189)

Utilizator TeoDiDiaconescu Teodora TeoDi Data 2 octombrie 2018 14:24:00
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1.28 kb
#include <fstream>
int n;
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int BinarySearch(int x,int t,int v[])
{
    int st=0,dr=n-1,gasit=0,mij,poz;
    while(st<=dr && !gasit)
    {
        mij=(st+dr)/2;
        if(x==v[mij] && x!=v[mij+1]) {gasit=1; poz=mij+1;}
        else if(x<v[mij]) dr=mij-1;
        else st=mij+1;
    }
    if(t==0)
    {
        if(!gasit) fout<<-1<<'\n';
        else fout<<poz<<'\n';
    }
    if(t==1)
    {
        if(gasit) fout<<poz<<'\n';
        else
        {
            if(v[poz]<x) fout<<poz<<'\n';
            else fout<<poz+1<<'\n';
        }
    }
}
int BinarySearch(int x,int v[])
{
    int st=0,dr=n-1,gasit=0,mij,poz;
    while(st<=dr && !gasit)
    {
        mij=(st+dr)/2;
        if(x==v[mij] && x!=v[mij-1]) {gasit=1; poz=mij+1;}
        else if(x>v[mij]) st=mij+1;
        else dr=mij-1;
    }
    if(gasit) fout<<poz<<'\n';
    else
    {
        if(v[poz]<x) fout<<poz<<'\n';
            else fout<<poz-1<<'\n';
    }
}
int main()
{
    fin>>n;
    int v[n];
    for(int i=0;i<n;i++) fin>>v[i];
    int m,x,y;
    fin>>m;
    for(int i=1;i<=m;i++)
    {
        fin>>x>>y;
        if(x==2) BinarySearch(y,v);
        else BinarySearch(y,x,v);
    }
    return 0;
}