day6

day6/day6.jl

@@ -0,0 +1,57 @@
+#!/usr/bin/env julia
+
+using Test
+
+function string_start_index(s, width=4)
+  delta = width - 1
+  for i in 1:length(s)-delta
+    if length(Set(s[i:i+delta])) == width
+      println(i, " ", s[i:i+delta])
+      return i + delta
+    end
+  end
+end
+
+function file_start_index(infile, width=4)
+  io = open(infile, "r")
+  data = readchomp(io)
+  close(io)
+  return string_start_index(data, width)
+end
+
+function test()
+  @testset "elf signal start ex" verbose=true begin
+    @test string_start_index("mjqjpqmgbljsphdztnvjfqwrcgsmlb") == 7
+    @test string_start_index("bvwbjplbgvbhsrlpgdmjqwftvncz") == 5
+    @test string_start_index("nppdvjthqldpwncqszvftbrmjlhg") == 6
+    @test string_start_index("nznrnfrfntjfmvfwmzdfjlvtqnbhcprsg") == 10
+    @test string_start_index("zcfzfwzzqfrljwzlrfnpqdbhtmscgvjw") == 11
+    @test string_start_index("wewewewewewewewewewewewewebo") == 28
+  end
+  @testset "elf signal start in" verbose=true begin
+    @test file_start_index("input.txt") == 1142
+  end
+  @testset "elf signal msg ex" verbose=true begin
+    @test string_start_index("mjqjpqmgbljsphdztnvjfqwrcgsmlb", 14) == 19
+    @test string_start_index("bvwbjplbgvbhsrlpgdmjqwftvncz", 14) == 23
+    @test string_start_index("nppdvjthqldpwncqszvftbrmjlhg", 14) == 23
+    @test string_start_index("nznrnfrfntjfmvfwmzdfjlvtqnbhcprsg", 14) == 29
+    @test string_start_index("zcfzfwzzqfrljwzlrfnpqdbhtmscgvjw", 14) == 26
+  end
+  @testset "elf signal msg in" verbose=true begin
+    @test file_start_index("input.txt", 14) == 2803
+  end
+
+end
+
+function main()
+  if size(ARGS, 1) == 0
+    test()
+  else
+    infile = ARGS[1]
+    println("infile = ", infile)
+    println("start index: ", file_start_index(infile))
+  end
+end
+
+main()

day6/input.txt

@@ -0,0 +1 @@
+wzsspbssbhshchmmrmprmrfrsfrrjhjphjjtppbfflqfqppdhdbhdhbbjgghgzgsgfsfhfhvvwcwhwwnppsbsggqnnvvtffpssjfjnnltntdtdddptprppjmmqssrlrplllfrrzggbmmlmnmtnnzddfdgfdfsstbstbbzcbbcjcvvfwwwzlzssglsgllnbnmbnmbbgmmppmwwsrrzqqvgqgnqnmmswwrnnbsnnbdbwwqnwqnwwzzqwzqzjqqwbqbccjcwwjlwjwppqfqjffwddrzrjzrjzzzhchjjlqqrggzvvnlvnvjvhvnvjvbbvdvldldbbwddtsscbbhccmbmbppbmmgjggcjjlrrwjwtjwwmffgddwvdvbdbvvhchmhmdmwwbjbjcbbcmbmmslmlslsjjrnrjrjpjcjgcjcjbbwsbsbfssjzsjsggcmcsswgssbbqpbqqdsdqqztzmzpmpbmbvbjjtrjtthwhbhnbhnbnssvpvsppgrrcwrrmqqhpphrpphchvhphqhbqbtttllsrlsrshrrmhmvvrmrnngbgnbnpbprrrftfjtjwwmrmvmcmvmrmwmssrccfbbhppjbpbwbqwbqbzzfmzmtttjbbvcvppmwwrbbzsbzbfzfdzzhrhzhvvsqvsqsnslljwllqlwllvccnttzhtzzpspqspqsqgsssvnsvshvsvqvnvlldbbfdfmmpbpgphhpqhpppchhbfbrfrllntnznrrhdrdhhdhjjgwwqhhfssjbjwjqqbffvvcrchccwmcwcllljtjrrqgrrdcrddvfvwvzzjqqcffgjgzzdhdwdssffjjhccggmtmltlhtthzhvhlvlddsfsbbtjbjcbjcjzcjjpfjfzzpnnbtbqtbqtqptpnplllbzbllhbllnqnttpddqvdqvqmmjnjggnnnhqqfcqcffqppdgpddvqddmhmrhrtrmrzmzhzpzlzqlqpqhphrpppjqqppzbzmmjgggqtggtjthhlclnclcnccmcppdcpddqrrfgrgbbhwhdhrrqtqpqjpqjpqjqqmcqmccnngqqqmtqtssnvnzvvpcpwcwwqcqqqfcqffsvsmvmttttmrrzssghgssjmsmbmvvwggggzhhfvdpgjmmvzbfjghqhrfbpmbvjzwvfmcthrqwdhghpwsspmhpqnmwhjzpnlzfnvhdnnrqwnvctbmjqzhqrpjlwrssdlwqzmsfrfzmgjhnwwnwczswnhsdbvqbmdlvntsdrhrjjcjjhpbblgwhjwdcdjtpvtmslwvncwdjbwzvbpzbvddvssnrhtshrcvnhqnpmjzfswqbbrztnwjcpflfbhnphfwmjvnvtswgfttgjcqcngmmwjlfsprwfcfwcmgrgbnqmzbtzbtbztngvrzpsnrzvhbsdjnzpwwzllgnfdrlwpmnrznqsqcmvnfbnhqjddvcjmtgbpbmsgqdqzflmlmqncmhwltrmdmgnwpfwddrdpfhsgsnggchzjhgpwrsmdzgjtrgmnprhbwbcbpzbdvvstfqcnqzbdjqpmrdbtgcthtclftghhmnrzrjqqsbndhpvmdpfpwdlhvmczvdfgvpqclssvlhqnhlcfnfbvtspdzmgzdctvpdcwchtqhpsgmmblspjdlvgblbpgrfrgnqqsphcsrgfsdmpqscbjmnqrfbcwfthdtswbzthpnvsfbntnbmmgpfzlqwhppvvdrmwbqzbgppbgsqmjfqtmntgwpnccthftwdmvwmnchlbjhsnmbhndczbrhhjpbvnjdzrcndbbmfwfwsjwfgbqhwhrsvlngsbhhlrdjzzbmjpsqhlpzwcsntjhlmngblspmsjrjwsjsrqwnrcwsmcsbmpjwrthbqhrschrmrppnnbmjbvjzlmzsrfdwqlfnfjljftjvzsqdwlhbblqcdlqjbprpcllhlhmwrbrlgfrcqshrtjpnmhljttdvpfnhdjqvjhhfczwvbzqgnzgljcfrbpgwnfhfchwzqmqqzpbcdpqmnbrppzblnnzqrfnmgtljwnfgzwvnjppdbdhbznvpgwhbdjjvlspgwgjsmfsvllpgwlfnnptmwnfsshjjvqzjwrqpvmsphpmftqdllqqdzcjwfvpftgvspprdwvvcnglmbpntghntdwpjvvsppgjvnbjgvtzchtqtwbddncsbrfcvrnvlggvwgmmnfzrswnzjrwthzmdsmzqmzsnrqsnslnhmfqljnnnzshqfqshrhhjmnhdgphctswdbhnrcgnzmmzqpjqbtdfhhltsmvvtntbgsznshhsghblhlhqpmdcfhmnfzvhgnfsfflcfwbfqzmccrjdpfvphtqbrdnzjfmfhbzqcpdnjdcgwprvchlzrcvrghgjqncjvnndbcshntrfsbsnmjlhclnzpfdgztflcpwqpnvlscfndwqzfvcmpgfncszpmwcsrdbrrhdjvmthslfvmlgpqhlgwhqnjljcvhswbsbqfrfhvzwjvdmhzsgbmbmfnbpclqdwhvrlpppszptjvwtvdmfltfqqgjttdggcvllblnnhjqnjzhvpgpzzpzwbpjqbthnjjlmsjgjzqwnjlqrcdmmvsldtcrzqdrcmwqhnhfghdlmzwcspgmlpzhbdsmlwlqnhhvcvdfzmvfwpbfmjtdllprfqzzjpbrshdzgspsrlrwrhdpmznzzqngwrzqpmtwgbsswrnnnfctjhbcftnslsqwjvmfwfdvfqcnsvfsvgstgbzpmljjtlvtnfsdzpvcgbjqwgbgzqbjfgltqvnhffflsbjzfqfrfbssrvvwqvqptmhrbgllqjwptrzgvqgccsrvbgtvmzfzlmtqrgfwhzddsptclbhjlwqfntvjqdvcddnffmbtqrnsvtmlvljcqdsrpggcmqvmmlzwwbgznhblwzjdppvtqzjvcmtfzhdzjplrdbrfrgzpldvnsgqlbwbmfvrbgwzmjmmqdfgwtbgtzmdqnvqbwvcfjhddqvnjtjlhhjnltbtqqvblwlmglrqcrcfjvdntrnqzzbmrjqglmrdcjgnshcghtprjqqsdrmgdnzmzcfqqdtjtrqgtqtgrpmmgzjtcrznmqccjbdpbvrnnbmbzvgdcnrczbctbrsrrqrjnfcdpzlnngwvcdtbbgssvhpptntqdzhcqtlpvzjbfgzggrgrcgtdfjbwdcrpztnfcdbscnlmqmwcbmtnddgbmhwsgvcfdcmhlsvtnqtmrnsjzhppgwvzlmhwwmpfjzrfbhsgntzrdhwswrnfmmmczqrvdrqnhgrvqbdddhglwsftsljvgbnjqfwfzsspdqvgsnlgfsfpvdrjhzcldtrmjjrmdhvvfrjldhhtqnvsvlldjpjbpwstfsmrpmbqbnnpvqtbgjvblthbmwqtfcfgnjscvtbvlqcmlhffpzgjzfscsqwnhrjhvbrrzwqvbjwtwhtqsdbssfgncppnsfgfltdcbjqjzqqtprsbvjzhmchnltvmbsvpvhgzhfhbrnttsqbcmwpdnwqqgdrjrdwdhtzwsmcdffqgsddvbzfjhtfhtnfdbfrwmdtcqshfjrcpswzcptgwgmctpmzjdbqlmqwthmnfplmctpsslcsdtqpqhjtmjdnmnqnjgchwstsmtpvsmgpsbfgwqnzhrdgdvcdlcldfcmjvsdldgbmhltjhczffwmzqssnhfnwftfgpshntjbpjdffjpcmcpwhclrrwqcqzmntjglzgcfrplfpvprtpvpjdlcrfwrtrzdzmhsrsmdcpqqrqgvfpdbmzbzqdfhpplmgfrdghclbclgswvwhhdvcpmpzflpffmptcrwglftztccrpbrvmpnqmqdgjgrrlbtqtvgcjpljttwtdslqjqlsdpblgrqbrtbmtblfbqtbvsqhpqzpqfhjqpmjrmcvqmsbbpjpdncgnjftclbltwszrrfzqbjcdtphcvpmbhppvwjwlprgmghrjzzgnvzlvghnjbzqjpdgzfsnjchpbzqdzpsjmsrvvqwjcpwznlpbjldlrdfqtrzhqzcnpjqbbbf