49 lines
1.0 KiB
Plaintext
Executable File
49 lines
1.0 KiB
Plaintext
Executable File
#!/usr/bin/env janet
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(use spork/test)
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(def peg
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'{:number
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(+ (<- :d)
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(/ (if "one" "on") "1")
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(/ (if "two" "tw") "2")
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(/ (if "three" "thre") "3")
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(/ (if "four" "fou") "4")
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(/ (if "five" "fiv") "5")
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(/ (if "six" "si") "6")
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(/ (if "seven" "seve") "7")
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(/ (if "eight" "eigh") "8")
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(/ (if "nine" "nin") "9"))
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:main (any (thru :number))})
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(defn pmatch [input] (peg/match peg input))
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(defn first+last [input]
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(var m (pmatch input))
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(scan-number
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(string/join [(first m) (last m)])))
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(defn solve [lines]
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(sum (map first+last lines)))
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(start-suite)
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(assert (deep= @["1"] (pmatch "one")))
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(assert (deep= @["1" "2"] (pmatch "onetwo")))
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(assert (deep= @["1" "2" "3"] (pmatch "one2three")))
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(assert (deep= @["8" "3"] (pmatch "eighthree")))
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(def example
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["two1nine"
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"eighthree"
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"abcone2threexyz"
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"xtwone3four"
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"4nineightseven2"
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"onefour"
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"7pqrstsixteen"])
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(assert (= 281 (solve example)))
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(end-suite)
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(print (with [f (file/open "p01.txt")] (solve (file/lines f))))
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