list 组合列表列表的 Groovy 方法

Groovy Method to combine list of lists

提问by Vamsi Emani

Input >> list = [[1,2,3], [6], [3,4,5,6]]

Output >> [1,2,3,3,4,5,6,6] 

I want to know if there is something more straightforward than this

我想知道是否有比这更直接的东西

l = []
list.each{ l = l + it }
println l

like a default groovy closure or method?

像默认的 groovy 闭包或方法？

回答by tim_yates

Try flatten, ie:

尝试flatten，即：

list.flatten()

Or, to get the output you want:

或者，要获得您想要的输出：

list = [[1,2,3], [6], [3,4,5,6]]

assert list.flatten().sort() == [1,2,3,3,4,5,6,6]