For each query string determine how many times it occurs in the list of input strings. Write a query to find the node type of Binary Tree ordered by the value of the node. HackerRank stack problem Find maximum element Java. Revising the Select Query I HackerRank codersarts. Three difficult HackerRank problems and how to solve them. Decimal102 Download this script to create the table and populate it with sample data What query would you write to calculate moving averages. For example freeing up a 1 GB file on a 1 TB file system could involve.