Ruby:如何找到2个数组之间的差异,订购问题

Question

我正在尝试计算订单重要的两个数组之间的差异.例如:

array_one = ["A", "B", "C"]
array_two = ["B", "C", "A"]

这将产生3个差异,因为:

array_one[0] != array_two[0]
array_one[1] != array_two[1]
array_one[2] != array_two[2]

另一个例子:

array_one = ["Z", "X", "Y"]
array_two = ["Z", "W", "Y"]

这将产生1,因为:

array_one[0] == array_two[0]
array_one[1] != array_two[1]
array_one[2] == array_two[2]

任何建议都非常感谢.

Answer 1

这个怎么样

array_one = ["A", "B", "C"]
array_two = ["A", "C", "A"]

array_one.select.each_with_index { |item, index| 
  array_two[index] != item 
} => #B and C