#include <stdlib.h>
#include <math.h>


// To replace the old shufle file.
// ===============================
// *****************************************************8
void shufle(int ind_case, int n, float a[20])
{
	int i;
	

	switch (ind_case)
	{
		case 1:
		a[0]=999;
		a[1]=21;
		a[2]=5;
		a[3]=37;
		a[4]=2;
		break;
		// ------------------
		case 2:
			a[0]=999;
			a[1]=44;
			a[2]=55;
			a[3]=12;
			a[4]=42;
//
			a[5]=94;
			a[6]=18;
			a[7]=06;
			a[8]=67;
			break;
			// ------------------
		case 3:
			unsigned int iseed; // a seed for random number generator.
    		        iseed=1;      
			// for the same iseed values the sequence of the random 
			// numbers generated is the same.
			srand(iseed); // set the iseed for the random 
 			// number generator.
     			a[0]=999; //doesn't participate in the sorting.
		        for(i=1;i<=n;i++)
		        {
		    		a[i]=(float)rand()/(float)RAND_MAX; 
				// rand() generates a pseudo-random 
				// in the interval (0,RAND_MAX)
				// a[i] – receives numbers in the interval (0 1).
			}
		break;

	}
}
// ******************************************************