regex - How to find last occurrence of a number in a string using Ruby? -

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रूबी का उपयोग ... निम्न स्ट्रिंग दिया है: 

  x = "blah_blah.do .dah [4543] जंक_जंक "

अंतिम संख्या / अंक के बाद मैं सभी पाठ कैसे निकालूं?

मैंने सोचा था कि ऐसा करने का सबसे आसान तरीका खोज के द्वारा हो सकता है आखिरी घटना का सूचकांक और उसके बाद उस सूचकांक के बाद सब कुछ निकालना हालांकि, मुझे यह पता नहीं लग सकता है कि उस इंडेक्स को कैसे प्राप्त किया जाए। Regex का उपयोग करने पर मेरे सभी प्रयास विफल हुए हैं।

उत्तर हैं कि आपको क्या करना है

इसके अलावा संख्या का पिछला मौका ढूंढने के लिए: 

  x = 'blah_blah.do.dah [4543] जंक_जंक' x.rindex (/ \ d /)

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