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0 points632y ago0 comments

I'm sorry I'm not familiar with the mathematics behind regular expressions. Can you give an example of what your approach would look like?

0 comments

dumbo-octopus2y ago

    first = line.match(  /(?:(0|zero)|(1|one) ... (9|nine))/)
    last  = line.match(/.*(?:(0|zero)|(1|one) ... (9|nine))/)

    indexOfGroupMatched = 
        ([_, ...groups]) => groups.findIndex(x => x != undefined)

    num = +[first, last].map(indexOfGroupMatched).join('')

63OP2y ago

Oh I understand. That's a good idea. Honestly I only ever use regex for AOC so I never would've thought of using it like that. I'll keep it in mind. Thanks!

j / k navigate · click thread line to collapse

0 comments

dumbo-octopus2y ago

    first = line.match(  /(?:(0|zero)|(1|one) ... (9|nine))/)
    last  = line.match(/.*(?:(0|zero)|(1|one) ... (9|nine))/)

    indexOfGroupMatched = 
        ([_, ...groups]) => groups.findIndex(x => x != undefined)

    num = +[first, last].map(indexOfGroupMatched).join('')

63OP2y ago

Oh I understand. That's a good idea. Honestly I only ever use regex for AOC so I never would've thought of using it like that. I'll keep it in mind. Thanks!

j / k navigate · click thread line to collapse