Created
March 19, 2012 23:41
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Calculate number of times each element repeats in the List
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| scala> val l = "a" :: "b" :: "c" :: "b" :: "a" :: List() | |
| l: List[java.lang.String] = List(a, b, c, b, a) | |
| scala> val distinct = l.distinct | |
| distinct: List[java.lang.String] = List(a, b, c) | |
| scala> distinct zip (distinct map (p => l.filter(p == _).size)) | |
| res0: List[(java.lang.String, Int)] = List((a,2), (b,2), (c,1)) |
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val testText = "hello, world, hello, world one two three one two three, four five six seven eight nine ten"
val cleansedList = testText.replace(",","").split(" ")
val wordMap = cleansedList.distinct.map(word => (word, cleansedList.count(_ == word) )).toMap