java - What is the Regular expression for Roman numerals? -


इस सवाल का पहले से ही एक उत्तर है: < / P>

  • 10 उत्तर

    मान लीजिए मेरे पास फ़ाइल नाम है जैसे abc_33_5_ii.pdf मुझे उस फाइल की पहचान करने की आवश्यकता है अगर इसके अंत में रोमन संख्या है यह कोई रोमन अंक हो सकता है मैं इसके लिए नियमित अभिव्यक्ति नहीं लिख सकता हूं फ़ाइल प्रकार की तरह हो सकता है .. xyz_43_4_iv.pdf या hfb_87_3_xi.pdf। मुझे अंतिम भाग ("_ iv" / "_ xi") की पहचान करने की आवश्यकता है कृपया मेरी सहायता करें

    आप ऐसा कुछ इस्तेमाल कर सकते हैं: _ ([^ ._] +) \। । + $ $ ।

    मैं @ ग्रैंट थॉमस से सहमत हूं और इसे विभाजित करता हूं, जैसे: 

      स्ट्रिंग इनपुट = "abc_33_5_ii.pdf"; स्ट्रिंग संख्या = इनपुट.split ("_") [3] .split ("\\।") [0];   
     जैसा कि आप देख सकते हैं,  विभाजन  दृष्टिकोण बहुत साफ है।

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