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Median Is the Middle Value in an Sorted Set for example [1,2,3,4,5] Value 3 is Median, so it is easy when we have odd values in list. in case if have even number in set i.e [1,2,3,4] so middle value will between 2,3 so the median will be 2+3/2. import org.apache.spark.sql.SparkSession import