//coding Team 53 :)


import java.util.Arrays;

public class ArrayManipulation {


    public static int[] removeFirst(int[] arr){
        int[] result = new int[arr.length-1];
        for(int i = 1; i < arr.length; i++){
            result[i-1] = arr[i];
        }
        return result;
    }

    	public static int[] removeLast(int[] arr) {
		int[] result = new int[arr.length-1];
		for(int i = 0; i < arr.length - 1; i++) {
			result[i] = arr[i];
	}
	return result;
}


	public static int[] squareEach(int[] arr) {
        
	    int[] result = new int[arr.length];
	    for(int i = 0; i < arr.length; i++) {
	        result[i] = arr[i] * arr[i];
	    }
	    return result;
		
	}

   
    public static int[] reverseArray(int[] arr) {

        for (int i = 0; i < arr.length/2; i++) {
            int tmp = arr[i];
            arr[i] = arr[arr.length - 1 - i];
            arr[arr.length - 1 - i] = tmp;
         }
         return arr;

    }
    public static void main(String[] args) {
       
        int[] arr = {1,2,3,4,5};
        System.out.println(Arrays.toString(removeFirst(arr)));
        System.out.println(Arrays.toString(removeLast(arr)));
        System.out.println(Arrays.toString(squareEach(arr)));
        System.out.println(Arrays.toString(reverseArray(arr)));
       
		
        
    }
}