我需要string.index的建议
[英]I need advice with string.index
问题描述
I'd like to get this line of ruby code working(I always get 0). 
我想让这行红宝石代码正常工作（我总是得到0）。
alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz ."
letter = gets
puts alphabet.index(letter).to_i
I'd like to get the position of the letter in the alphabet. 我想知道字母在字母表中的位置。
1 个解决方案
解决方案1
4 已采纳 2019-06-20 14:40:47
Try following, 尝试跟随，
alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz ."
letter = gets.chomp
puts alphabet.index(letter)
You need to chomp \\n coming after letter entered which is the result of pressing "enter" afterwards, 您需要在输入字母后紧跟\\n ，这是随后按“ Enter”的结果，
> letter = gets
B
=> "B\n"
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