Selection sort in ruby

Ruby program for Selection sort. Here more solutions.

#  Ruby program for selection sort
class MySort 
	#  Swap the array element
	def swap(arr, x, y) 
		#  x and y are index of array
		temp = arr[x]
		arr[x] = arr[y]
		arr[y] = temp
	end

	def selectionSort(arr, n) 
		min = 0
		i = 0
		#  Execute loop from 0..n
		while (i < n) 
			#  Get current index
			min = i
			j = i + 1
			while (j < n) 
				if (arr[min] > arr[j]) 
					#  Get the minimum element index
					min = j
				end

				j += 1
			end

			if (i != min) 
				#  Swap minimum element at i index
				self.swap(arr, i, min)
			end

			i += 1
		end

	end

	#  Display array elements
	def display(arr, n) 
		i = 0
		while (i < n) 
			#  Display element value
			print("  ", arr[i])
			i += 1
		end

		print("\n")
	end

end

def main() 
	task = MySort.new()
	#  Array of integer elements
	arr = [8, 2, 3, 8, 1, 3, 73, 121, 54, 23, 84, 13, 67, 23, 52]
	#  Get the size of array
	n = arr.length
	print(" Before Sort :\n")
	task.display(arr, n)
	#  Test
	task.selectionSort(arr, n)
	print(" After Sort :\n")
	task.display(arr, n)
end

main()

Output

 Before Sort :
  8  2  3  8  1  3  73  121  54  23  84  13  67  23  52
 After Sort :
  1  2  3  3  8  8  13  23  23  52  54  67  73  84  121