79: Passcode derivation

79_passcode_derivation/main.go

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+package main
+
+//A common security method used for online banking is to ask the user for three random characters from a passcode. For example, if the passcode was 531278, they may ask for the 2nd, 3rd, and 5th characters; the expected reply would be: 317.
+//
+//The text file, keylog.txt, contains fifty successful login attempts.
+//
+//Given that the three characters are always asked for in order, analyse the file so as to determine the shortest possible secret passcode of unknown length.
+
+func main() {
+
+}

79_passcode_derivation/p079_keylog.txt

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+319
+680
+180
+690
+129
+620
+762
+689
+762
+318
+368
+710
+720
+710
+629
+168
+160
+689
+716
+731
+736
+729
+316
+729
+729
+710
+769
+290
+719
+680
+318
+389
+162
+289
+162
+718
+729
+319
+790
+680
+890
+362
+319
+760
+316
+729
+380
+319
+728
+716