Java Varargs - Simple Addition hackerrank Solution - Java for explanation watch video : Code: import java.io.*; import java.util.*; public class Solution { public static void add( int ... arr){ int sum = 0 ; for ( int i= 0 ;i<arr.length;i++){ sum = sum + arr[i]; if (i==arr.length- 1 ){ System.out.print(arr[i]+ "=" ); } else { System.out.print(arr[i]+ "+"...