public class Methoden {

	static double field[];
	
	public static void main(String[] args) {
		field = new double[100];
		
		int help;
		int a = 5;
		int b = 3;
		System.out.println("a="+a+", b="+b);
		// swap
		help = a;
		a    = b;
		b    = help;
		System.out.println("a="+a+", b="+b);
		
		// TODO Auto-generated method stub
		for (int i=0; i<100; i++) {
			//System.out.println("f(" + i + ")=" + square(i));
			field[i] = Math.random();
		}
		
		//System.out.println("field[0]="+field[0]+", field[1]="+field[1]);
		//swap(field, 0, 1);
		//System.out.println("field[0]="+field[0]+", field[1]="+field[1]);
		// selection sort
		for (int i=field.length-1; i>0; i--) {
			int largestIndex = 0;
			// search for the largest element
			for (int j = 0; j<=i; j++) {
				if (field[j]>field[largestIndex]) {
					largestIndex = j;
				}
			}
			// swap largest element with last element
			swap(field, largestIndex, i);
		}
		
		for (int i=0; i<100; i++) {
			System.out.println("field(" + i + ")=" + field[i]);
		}		
		
	}
	
	public static double square(double x) {
		if (x>0){
			return x * x;
		}
		else{
			return x * x;
		}
	}
	
	public static void swap(double field[], int i, int j) {
		double temp = field[i];
		field[i]    = field[j];
		field[j]    = temp;
	}

}