package demo;

import java.util.Arrays;

public class Remove {
public static void main(String args[]) {
int[] ar= {10,19,18,17,16};
int index=3;
int size=ar.length-1;
int[]removear=new int[size];
int j=0;
for(int i=0;i<ar.length;i++) {
if(i!=3) {
removear[j]=ar[i];
j++;
}

    }
    System.out.println(Arrays.toString(removear));
}

}

output:

[10, 19, 18, 16]

Program for reversing the given number:

package demo;

import java.util.Arrays;

public class Reversearray {
public static void main(String args[]) {
int[]ar= {11,12,13,14,15};
int i=0;
int j=ar.length-1;
for( i=0;i<j;i++) {
int temp=ar[i];
ar[i]=ar[j];
ar[j]=temp;
j–;
}
System.out.println(Arrays.toString(ar));
}

}

output:

[15, 14, 13, 12, 11]