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19-schrage_dist.c
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19-schrage_dist.c
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////////////////////////////
///////SCHRAGE DISTRIB//////
////////PEDRO MENDES////////
////////////////////////////
#include<stdio.h>
#include<math.h>
int main ()
{
int a, m;
int r, q;
int x, x1, t;
int L, n=10000, h[n];
int med, sum, quad;
x = 51;
a = 16807;
m = 2147483647;
q = 127773;
r = 2836;
L = 100;
for(t=0; t<n; t++)
{
h[t] = 0;
}
printf("\nPara n = %d\n", n);
for(t=0; t<n; t++)
{
x = a*(x%q) - r*(x/q);
if( x < 0 )
{
x = x + m;
}
x1 = x%L;
h[x1] = h[x1] + 1;
}
// for(t=0; t<L; t++) //caso seja interessante fazer o histograma
// {
// printf("%d %d\n", t, h[t]);
// }
med = 0;
for(t=0; t<L; t++)
{
med = med + h[t];
}
med = med/L;
printf("\nA media é %d\n\n", med);
sum = 0;
quad = 0;
for(t=0; t<L; t++)
{
quad = h[t] - med;
quad = pow(quad,2);
sum = sum + quad;
}
sum = sum/L;
sum = sqrt(sum);
printf("O desvio padrao é %d\n\n", sum);
return 0;
}