Cod sursa(job #1648688)

Utilizator mihai2003LLL LLL mihai2003 Data 11 martie 2016 11:17:54
Problema Cautare binara Scor 0
Compilator c Status done
Runda Arhiva educationala Marime 1.14 kb
#include <stdio.h>
#include <stdlib.h>
int v[100000];
int caut1(int v[],int n,int x){
    int i=0,pas=1;;
    while(pas<n)
        pas*=2;
    while(pas!=0){
        if(i+pas<=n && v[i+pas]<=x)
            i+=pas;
        pas/=2;
    }
    return i;
}
int caut2(int v[],int n,int x){
    int i=0,pas=1;;
    while(pas<n)
        pas*=2;
    while(pas!=0){
        if(i+pas<=n && v[i+pas]>=x)
            i+=pas;
        pas/=2;
    }
    return i;
}
int caut3(int v[],int n,int x){
    int i=0,pas=1;;
    while(pas<n)
        pas*=2;
    while(pas!=0){
        if(i+pas<n && v[i+pas]<x)
            i+=pas;
        pas/=2;
    }
    return i+2;
}
int main()
{
    freopen("cautbin.in","r",stdin);
    freopen("cautbin.out","w",stdout);
    int n,q,i;
    scanf("%d",&n);
    for(i=0;i<n;i++)
        scanf("%d",&v[i]);
    scanf("%d",&q);
    for(i=0;i<q;i++){
        int test,nita;
        scanf("%d %d",&test,&nita);
        if(test==0){
            printf("%d\n",caut1(v,n,nita)+1);
        }
        else
            if(test==1)
                printf("%d\n",caut2(v,n,nita));
            else
                printf("%d\n",caut3(v,n,nita));
    }
    return 0;
}