Selection Sort in Java

selectionsort.java

import java.io.*;

class Ideone
{
	static void printArray(int[] arr)
	{
		for(int i = 0; i < arr.length; i++)
		{
			System.out.print(arr[i]);
			System.out.print(" ");
		}
		System.out.println();
	}
	
	static void swapElements(int[] arr, int i, int j)
	{
		int temp = arr[i];
		arr[i] = arr[j];
		arr[j] = temp;
	}
	
	static int[] selectionsort(int[] arr)
	{
		for(int i = 0; i < arr.length; i++)
		{
			int min_index = i;
			for(int j = i+1; j < arr.length; j++)
			{
				if(arr[j] < arr[min_index])
					min_index = j;
			}
			swapElements(arr,i,min_index);
		}
		return arr;
	}
	
	public static void main (String[] args)
	{
		int[] arr = {9,3,2,5,1,6,4,8,7};
		printArray(selectionsort(arr));
	}
}