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    Regular expression for 3.6 RTM or 3.6


    I need one regurlar expression like below

    3.6 RTM
    3.6
    4.1
    4.1 Hot Fix1

    here first two numbers are mandatory and its should separated by . and next word is not mandatory ,
    can any tell me how to get the regular expression of this.

    Regards,
    Harish Chepuri.
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    So what have you tried so far, with what valid and invalid inputs, and why isn't it giving you the right results?

    And what is a "word"? You're not being specific enough.

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