Cod sursa(job #408673)

Utilizator liv182copoiu liviu liv182 Data 3 martie 2010 10:14:48
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.83 kb
#include<stdio.h>
int n,m,pas,k,l;
int v[100000];
int caut(int x)
{
	int i; pas=1<<16;
	for(i=0;pas;pas>>=1)
	{
		if(i+pas<=n && v[i+pas]<=x)
			i+=pas;
	}
		if(v[i]==x)
			return i;
		return -1;
	}
int caut2(int x)
{
	int i ;pas=1<<16;
	for( i=0;pas;pas>>=1)
	{
		if(i+pas<=n && v[i+pas]<=x)
			i+=pas;
	}
		return i;
}
int caut3(int x)
{
	int i; pas=1<<16;
	for(int i=0;pas;pas>>=1)
	{
		if(i+pas<=n && v[i+pas]<x)
			i+=pas;
	}
		return i+1;
}
int main()
{
	freopen("cautbin.in","r",stdin);
	freopen("cautbin.out","w",stdout);
	scanf("%d",&n);
	for(int i=1;i<=n;++i)
		scanf("%d",&v[i]);
	scanf("%d",&m);
	for(int i=1;i<=m;i++)
	{
		scanf("%d%d",&k,&l);
		if(k==0)
			printf("%d\n",caut(l));
		if(k==1)
			printf("%d\n",caut2(l));
		if(k==2)
			printf("%d\n",caut3(l));
			
	}
	return 0;
}