functional partition（partition list Groovy builtin to split an array into equal sized subarrays? Stack Overflow）

def partition(array, size){def partitions =[]int partitionCount = array.size()/ size

partitionCount.times { partitionNumber ->def start = partitionNumber *

size

defend= start + size -1 partitions << array[start..end]}

if(array.size()% size) partitions << array[partitionCount * size..-1]return

partitions

}