Hackerrank Subarray Division Solution - Java For Explanation watch video:: Code:: import java.io.*; import java.math.*; import java.security.*; import java.text.*; import java.util.*; import java.util.concurrent.*; import java.util.function.*; import java.util.regex.*; import java.util.stream.*; import static java.util.stream.Collectors.joining; import static java.util.stream.Collectors.toList; class Result { /* * Complete the 'birthday' function below. * * The function is expected to return an INTEGER. * The function accepts following parameters: * 1. INTEGER_ARRAY s * 2. INTEGER d * 3. INTEGER m */ public static int birthday(List<Integer> s, int d, int m) { int ans = 0 ; for ( int i= 0 ;i<=s.size()-m;i++){ int sum = 0 ; for ( int j=i;j<i+m;j++){ sum = sum + s.get(j); } if (sum==d){