最后一次出现字符后拆分字符串

Question

我有以下字符串：

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

所以我想在最后一次冒号:之后拆分上面的句子，如下所示：

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

任何帮助？

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"]

Answer 2

尝试

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"]