public class ArrayUtil {
	
	public static void originalArray(){
		int [] arr = {2,7,5,1,0};
	      
	      for (int i = 0; i < arr.length; i++) {
	          System.out.println("pre arr Index" + i + ":" + arr[i]);
	        }
	      
	      int [] arr2 = new int[arr.length];
	      int j = 0;
	      for (int i = arr.length - 1; i>=0; i--) { 	  
	          arr2[j] = arr[i]; 
	          j++;
	      }
	      int m = 0;
	      for (int k = 0; k < arr.length; k++) {    	
	      	arr[m] = arr2[k];
	      	m++;
	      }
	      for (int i = 0; i < arr.length; i++) {
	        System.out.println("arr Index" + i + ":" + arr[i]);
	      }
	      for (int i = 0; i < arr2.length; i++) {
	          System.out.println("arr2 Index" + i + ":" + arr2[i]);
	        }
	}

	public static void reverseArray(int[] arr) {
	
	      int [] arr2 = new int[arr.length];
	      int j = 0;
	      for (int i = arr.length - 1; i>=0; i--) { 	  
	          arr2[j] = arr[i]; 
	          j++;}
	      
	      int m = 0;
	      for (int k = 0; k < arr.length; k++) {    	
	      	arr[m] = arr2[k];
	      	m++;}
	
	}
	
	public static void printArray(int[] arr)
	{
		
		for(int i = 0; i < arr.length; i++)
		{
			System.out.print(arr[i] + " ");
		}
		
	}
	
}