void piksr2(n,arr,brr)
int n;
float arr[],brr[];
{
	int i,j;
	float a,b;

	for (j=2;j<=n;j++) {
		a=arr[j];
		b=brr[j];
		i=j-1;
		while (i > 0 && arr[i] > a) {
			arr[i+1]=arr[i];
			brr[i+1]=brr[i];
			i--;
		}
		arr[i+1]=a;
		brr[i+1]=b;
	}
}