Histogram inScala | Big Data Analytics with Spark
val hist=Array("aa","bb","aa").foldLeft(Map[String,Int]()){
(m,c) => m + (c -> (m.getOrElse(c,0)+1))
}
val hist=Array("aa","bb","aa").foldLeft(Map[String,Int]()){
(m,c) => m.updated(c, m.getOrElse(c,0)+1)
}
hist.toSeq.sortBy(_._1).foreach(println)
Read full article from Histogram inScala | Big Data Analytics with Spark
val hist=Array("aa","bb","aa").foldLeft(Map[String,Int]()){
(m,c) => m + (c -> (m.getOrElse(c,0)+1))
}
val hist=Array("aa","bb","aa").foldLeft(Map[String,Int]()){
(m,c) => m.updated(c, m.getOrElse(c,0)+1)
}
hist.toSeq.sortBy(_._1).foreach(println)
Read full article from Histogram inScala | Big Data Analytics with Spark
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