Question

My String数组是这样的

arr = ["a", "apple", "b", "banyan", "banana", "c", "cat"]

我想将baynan合并到banana中，所以我的数组看起来像这样，我可以创建一个hashmap

arr = ["a", "apple", "b", "banyanbanana", "c", "cat"]
hash_arr = Hash[*arr]

但我仍然没有想法通过ruby在同一个数组中合并特定的两个相邻值。合并没有固定的位置，所以我可以从异常“Hash的奇数参数”中出来

提前谢谢

Answer 1

arr = ["a", "apple", "b", "banyan", "banana", "c", "cat"]

indexes = [3, 4] # Define which two elements to merge.

arr[indexes[0]] += arr.delete_at(indexes[1])

arr # => ["a", "apple", "b", "banyanbanana", "c", "cat"]

Answer 2

所以，对于一个值：

 arr = ["a", "apple", "b", "banyan", "banana", "c", "cat"]
 index = 3 # you can write `index = arr.find_index("banana")`
 arr[index..(index+1)] = arr[index] + arr[index+1]

您可以使用官方ruby文档来了解哪些方法类支持：http://ruby-doc.org/core-2.0/Array.html

Ruby如何合并到字符串数组中的元素

2 个答案: