Cod sursa(job #3037531)

Utilizator ArcopieBirghilescu Alexandru Arcopie Data 25 martie 2023 19:01:58
Problema Cautare binara Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.68 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
long long int cautare0(long long int v[], long long int st, long long int dr, long long int x)
{
    if(st>dr)return -1;
    else
    {
        long long int m=(st+dr)/2;
        if(v[m]==x && v[m+1]==x)
            return cautare0(v,m+1,dr,x);
        else if(v[m]==x && v[m+1]!=x)return m;
        else if(x<v[m])return cautare0(v,st,m-1,x);
        else
            return cautare0(v,m+1,dr,x);

    }

}
long long int cautare1(long long int v[], long long int st, long long int dr, long long int x)
{
    long long int m=(st+dr)/2;
    if(v[m]<x)
            return cautare1(v,m+1,dr,x);
    else if(v[m]<=x && v[m+1]==x)return cautare1(v,m+1,dr,x);
    else if(v[m]<=x && v[m+1]>x )return m;
    else if(v[m]>x)return cautare1(v,st,m-1,x);


}
long long int cautare2(long long int v[], long long int st, long long int dr, long long int x)
{
    long long int m=(st+dr)/2;
    if(v[m]>=x && v[m-1]<x)return m;
    else if(v[m]>=x)cautare2(v,st,m-1,x);
    else if(v[m]<x)cautare2(v,m+1,dr,x);




}
long long int main()
{
    long long int n,m,v[101],x,long long intrebare;
    fin>>n;
    for(long long int i=1;i<=n;i++)fin>>v[i];
    fin>>m;
    long long int a;
    for(long long int i=1;i<=m;i++)
    {
        fin>>long long intrebare>>x;
        if(long long intrebare==0)
        {
            a=cautare0(v,1,n,x);
            fout<<a<<'\n';
        }
        if(long long intrebare==1 && a!=-1)fout<<cautare1(v,1,n,x)<<'\n';
        if(long long intrebare==2 && a!=-1)fout<<cautare2(v,1,n,x);

    }




    return 0;
}