如何打印数组的最后元素

Question

如何在第二个元素ex：

之后打印数组的所有元素

ARR=["a","b","c","d","f"]

我想打印c d f

ARR=["cat","dog","horse"]

我想打马

提前致谢

Answer 1

和
一样简单 p ARR[2..-1] 其中2和-1是元素的索引。

Answer 2

将Array#[]与范围或Array#drop

一起使用

arr = ["a","b","c","d","f"]
arr[2..-1]
# => ["c", "d", "f"]
arr.drop(2)
# => ["c", "d", "f"]

arr = ["cat","dog","horse"]
arr[2..-1]
# => ["horse"]
arr.drop(2)
# => ["horse"]

Answer 3

使用Array#last方法

arr.last(arr.size - 2)