Q4.Find Missing Numbers in Array in Java

package practice1;

public class Q4_FindMissingNumberinArray {

public static void main(String[] args) {

int a[]= {1,2,4,5};

int sum=0;

for(int i=0;i<a.length;i++) {

sum=sum+a[i];

}

System.out.println(sum);

int b[]= {1,2,3,4,5};

int sum1=0;

for(int j=0;j<b.length;j++) {

sum1=sum1+b[j];

}

System.out.println(sum1);

System.out.println("Missing Number is :::"+(sum1-sum));

}

}