Cod sursa(job #402218)

Utilizator vladstoickvladstoick vladstoick Data 23 februarie 2010 17:38:12
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.84 kb
#include<stdio.h>
int n,m,pas,k,l,a[100000];
int caut1(int x)
{
	int i;
	pas=1<<16;
	for(i=0;pas;pas>>=1)
	{
		if(i+pas<=n && a[i+pas]<=x)
			i+=pas;
	}
	if(a[i]==x)
		return i;
	
	return -1;
}
int caut2(int x)
{
	int i;
	i=1;pas=1<<16;
	for(i=0;pas;pas>>=1)
	{
		if(i+pas<=n && a[i+pas]<=x)
			i+=pas;
	}
	return i;
}
int caut3(int x)
{
	int i;
	i=1;pas=1<<16;
	for(i=0;pas;pas>>=1)
	{
		if(i+pas<=n && a[i+pas]<x)
			i+=pas;
	}
	return 1+i;
}
int main()
{
	int i,j;
	freopen("cautbin.in","r",stdin);
	freopen("cautbin.out","w",stdout);
	scanf("%ld",&n);
	for(i=1;i<=n;i++)
		scanf("%ld",&a[i]);
	scanf("%ld",&m);
	for(i=1;i<=m;i++)
	{
		scanf("%ld%ld",&k,&l);
		if(k==0)
			printf("%ld\n",caut1(l));
		if(k==1)
			printf("%ld\n",caut2(l));
		if(k==2)
			printf("%ld\n",caut3(l));
			
	}
	return 0;
}