Cod sursa(job #2824593)

Utilizator vladuandreeaVladu Andreea Teodora vladuandreea Data 2 ianuarie 2022 18:50:12
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.13 kb
#include <fstream>

using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int v[100005];
int cautare1(int nr,int p)
{
    int m=0,l,r;
    l=0;
    r=p;
    while(l<r)
    {
        m=(l+r)/2;
        if (v[m]>nr)
            r=m;
        else
            l=m+1;
    }
    if(v[r-1]==nr)
    return r;
    return -1;
}

int cautare2(int nr,int p)
{
    int m=0,l,r;
    l=0;
    r=p;
    while(l<r && v)
    {
        m=(l+r)/2;
        if (v[m]>nr)
            r=m;
        else
            l=m+1;
    }
    return r;
}

int cautare3(int nr,int p)
{
    int m=0,l,r;
    l=0;
    r=p;
    while(l<r)
    {
        m=(l+r)/2;
        if (v[m]<nr)
            l=m+1;
        else
            r=m;
    }
    return l+1;
}

int main()
{
    int n,m,i,a,b;
    fin>>n;
    for(i=0; i<n; i++)
        fin>>v[i];
    fin>>m;
    for(i=0; i<m; i++)
    {
        fin>>a>>b;
        if(a==0)
            fout<<cautare1(b,n)<<'\n';
        else if(a==1)
            fout<<cautare2(b,n)<<'\n';
        else
            fout<<cautare3(b,n)<<'\n';
    }
    return 0;
}