Cod sursa(job #1728825)

Utilizator Dragne.Andrei11Dragne Andrei Dragne.Andrei11 Data 13 iulie 2016 18:50:58
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1.6 kb
#include <cstdio>
#define nmax 100000

using namespace std;

int v[nmax];
void fct1(int v[], int n, int x)
{
    int stg=1;
    int dr=n;
    int last=0;
    while(stg<=dr)
    {
        int mijl=stg+(dr-stg)/2;
        if(v[mijl]==x)
        {
            last=mijl;
            stg=mijl+1;
        }
        if(v[mijl!=x])
        {
            if(v[mijl]<x)
                dr=mijl-1;
            else
                stg=mijl+1;
        }
    }
    printf("%d\n", last);
}
void fct2(int v[], int n, int x)
{
    int stg=1;
    int dr=n;
    int last=0;
    while(stg<=dr)
    {
        int mijl=stg+(dr-stg)/2;
        if(v[mijl]<=x)
        {
            last=mijl;
            stg=mijl+1;
        }
        else
            dr=mijl-1;
    }
    printf("%d\n", last);
}
void fct3(int v[], int n, int x)
{
    int stg=1;
    int dr=n;
    int last=0;
    while(stg<=dr)
    {
        int mijl=stg+(dr-stg)/2;
        if(v[mijl]>=x)
        {
            last=mijl;
            dr=mijl-1;
        }
        else
            stg=mijl+1;
    }
    printf("%d\n", last);
}
int main()
{
    freopen("cautbin.in", "r", stdin);
    freopen("cautbin.out", "w", stdout);
    int n, m, nr;
    short q;

    scanf("%d", &n);
    for(register int i=1;i<=n;i++)
        scanf("%d", &v[i]);
    scanf("%d", &m);
    while(m)
    {
        scanf("%hd%d", &q, &nr);
        switch(q)
        {
            case 0:fct1(v, n, nr);break;
            case 1:fct2(v, n, nr);break;
            case 2:fct3(v, n, nr);break;
        }
        m--;
    }

    return 0;
}