Cod sursa(job #2706867)

Utilizator RobertLitaLita Robert RobertLita Data 15 februarie 2021 22:12:32
Problema Cautare binara Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.92 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
int cautare_binara1(int v[],int x,int n)
{
    int start=n-1,m=(1<<16);
    while(m!=0)
    {
        if(start-m>=0 && v[start-m]>=x)
            start-=m;
        m=m/2;
    }
    return start;
}
int cautare_binara0(int v[],int x,int n,int type)
{
    int start=0,m=(1<<16);
    while(m!=0)
    {
        if(start+m<n && v[start+m]<=x)
            start+=m;
        m=m/2;
    }
    if(type==0)
    {
        if(v[start]==x)return start;
        return -1;
    }
    if(type==1)return start;
}
int main()
{
    int v[100001],m,n,x,t;
    f>>n;
    for(int i=0; i<n; i++)
        f>>v[i];
    f>>m;
    for(int i=1; i<=m; i++)
    {
        f>>t>>x;
        if(t==0 || t==1)g<<cautare_binara0(v,x,n,t)+1<<'\n';
        else g<<cautare_binara1(v,x,n)+1<<'\n';
    }
    return 0;
}