拆分数组并获得所需的元素

Question

如果我有这个数组:

["1","2","3,a","4,b"]

我怎样才能从中得到这个数组？

["1","2","3","4"].

Answer 1

假设你有所有整数,(如果不是我猜你得到的想法:))

["1","2","3,a","4,b"].collect {|i| i.to_i}