在最后一个字符的出现位置拆分字符串

Question

我有以下字符串：

this sentence: should be: split after last colon: sentence

我想把上面的字符串按最后一个冒号（:）分割，以便得到这两个元素：

[ "this sentence: should be: split after last colon", "sentence" ]

["this sentence: should be: splited after last colon:", "sentence"]

- tokhi

---

问题不清楚。您是想按冒号分割（保留冒号），还是按冒号后面的空格分割（去掉空格）？ - sawa

你读了这个问题吗？？ - tokhi

Answer 1

尝试简单的代码：

s = 'this sentence: should be: splited after last colon: sentence'
s =~ /(.*):(.*)?/
[ $1 << ':', $2 ]
# => ["this sentence: should be: splited after last colon:", " sentence"]

- Малъ Скрылевъ

Answer 2

试一试

str = "this sentence: should be: splited after last colon: sentence"
last_pos = str.rindex(/\:/)
arr = [str[0..last_pos].strip, str[last_pos + 1 .. str.length].strip]

=>["this sentence: should be: splited after last colon:", "sentence"] 

- Bachan Smruty