Title: Chunk Sequence In Equal Sized Groups
Slug: chuck_sequence_into_equal_sized_groups
Summary: Chunk Sequence In Equal Sized Groups Using Scala.
Date: 2017-01-03 12:00
Category: Scala
Tags: Basics
Authors: Chris Albon

If you want to learn more, check out Scala Cookbook and Programming in Scala.

Create An Array Sequence



In [7]:

    
// Create an array that contains arrays with first and last names
val ages = List(42,25,28,38,58,63,23,458,2569,584,25,25,878)

Chunk Array Into Groups Of Two Elements



In [8]:

    
// Slide over sequence, create a list of two elements, then take two steps
ages.sliding(2,2).toArray









    Out[8]:





Array(List(42, 25), List(28, 38), List(58, 63), List(23, 458), List(2569, 584), List(25, 25), List(878))

Chunk Array Into Groups Of Two Elements, With Overlap



In [9]:

    
// Slide over sequence, create a list of two elements, then take one step
ages.sliding(2,1).toArray









    Out[9]:





Array(List(42, 25), List(25, 28), List(28, 38), List(38, 58), List(58, 63), List(63, 23), List(23, 458), List(458, 2569), List(2569, 584), List(584, 25), List(25, 25), List(25, 878))