selection sort

http://en.wikipedia.org/wiki/Selection_sort

void selectionSort(int[] a)  { 	for (int i = 0; i < a.length - 1; i++) 	{ 		int min = i; 		for (int j = i + 1; j < a.length; j++) 		{ 			if (a[j] < a[min]) 			{ 				min = j; 			} 		} 		if (i != min)  		{ 			int swap = a[i]; 			a[i] = a[min]; 			a[min] = swap; 		} 	} }