From 832bff6c300d1bf380e0fbcdf84f294c8afa4aae Mon Sep 17 00:00:00 2001
From: Andy Herd <andy@Pillar-of-Autumn.local>
Date: Tue, 26 Dec 2017 00:58:11 +0000
Subject: [PATCH] day01 inverse ccaptcha

---
 .idea/adventofcode.iml                        |  14 +
 .idea/misc.xml                                |   4 +
 .idea/modules.xml                             |   8 +
 .idea/vcs.xml                                 |   6 +
 .idea/workspace.xml                           | 500 ++++++++++++++++++
 .../inverse_captcha.cpython-35.pyc            | Bin 0 -> 788 bytes
 day01/day01.md                                |  20 +
 day01/inverse_captcha.py                      |  23 +
 day01/test_inverse_captcha.py                 |  28 +
 9 files changed, 603 insertions(+)
 create mode 100644 .idea/adventofcode.iml
 create mode 100644 .idea/misc.xml
 create mode 100644 .idea/modules.xml
 create mode 100644 .idea/vcs.xml
 create mode 100644 .idea/workspace.xml
 create mode 100644 day01/__pycache__/inverse_captcha.cpython-35.pyc
 create mode 100644 day01/day01.md
 create mode 100644 day01/inverse_captcha.py
 create mode 100644 day01/test_inverse_captcha.py

diff --git a/.idea/adventofcode.iml b/.idea/adventofcode.iml
new file mode 100644
index 0000000..5506ded
--- /dev/null
+++ b/.idea/adventofcode.iml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="Python" name="Python">
+      <configuration sdkName="" />
+    </facet>
+  </component>
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..b15eb3e
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_9" default="false" project-jdk-name="Python 3.5.2 virtualenv at ~/.virtualenvs/advent" project-jdk-type="Python SDK" />
+</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..b27311f
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/adventofcode.iml" filepath="$PROJECT_DIR$/.idea/adventofcode.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
new file mode 100644
index 0000000..ab16644
--- /dev/null
+++ b/.idea/workspace.xml
@@ -0,0 +1,500 @@
+<?xml version="1.0" encoding="UTF-8"?>
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+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
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+  <component name="FileEditorManager">
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+      <split-first>
+        <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
+          <file leaf-file-name="inverse_captcha.py" pinned="false" current-in-tab="true">
+            <entry file="file://$PROJECT_DIR$/day01/inverse_captcha.py">
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+                  <folding />
+                </state>
+              </provider>
+            </entry>
+          </file>
+        </leaf>
+      </split-first>
+      <split-second>
+        <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
+          <file leaf-file-name="test_inverse_captcha.py" pinned="false" current-in-tab="true">
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+              </provider>
+            </entry>
+          </file>
+          <file leaf-file-name="day01.md" pinned="false" current-in-tab="false">
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+  <component name="FindInProjectRecents">
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+  <component name="GradleLocalSettings">
+    <option name="externalProjectsViewState">
+      <projects_view />
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+  <component name="IdeDocumentHistory">
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+        <option value="$PROJECT_DIR$/day01/test_01_inverse_captcha.py" />
+        <option value="$PROJECT_DIR$/day01/inverse_captcha.py" />
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+  <component name="ProjectFrameBounds" fullScreen="true">
+    <option name="width" value="1440" />
+    <option name="height" value="900" />
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+  <component name="ProjectLevelVcsManager">
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+      <abbreviatePackageNames />
+      <autoscrollToSource />
+      <autoscrollFromSource />
+      <sortByType />
+      <manualOrder />
+      <foldersAlwaysOnTop value="true" />
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+    <panes>
+      <pane id="Scope" />
+      <pane id="ProjectPane">
+        <subPane>
+          <expand>
+            <path>
+              <item name="adventofcode" type="b2602c69:ProjectViewProjectNode" />
+              <item name="adventofcode" type="462c0819:PsiDirectoryNode" />
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+            <path>
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+              <item name="adventofcode" type="462c0819:PsiDirectoryNode" />
+              <item name="day01" type="462c0819:PsiDirectoryNode" />
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+          <select />
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+      <pane id="PackagesPane" />
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+    <property name="settings.editor.selected.configurable" value="preferences.editor" />
+    <property name="project.structure.last.edited" value="Project" />
+    <property name="project.structure.proportion" value="0.15" />
+    <property name="project.structure.side.proportion" value="0.2" />
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+  <component name="PyConsoleOptionsProvider">
+    <option name="myPythonConsoleState">
+      <console-settings module-name="adventofcode">
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+  <component name="RunDashboard">
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+        <RuleState>
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+      <option name="HTML_USED" value="false" />
+      <option name="WIDTH" value="400" />
+      <option name="HEIGHT" value="300" />
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+      <option name="PROPERTIES_FILE" />
+      <envs />
+      <properties />
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diff --git a/day01/day01.md b/day01/day01.md
new file mode 100644
index 0000000..3c253a0
--- /dev/null
+++ b/day01/day01.md
@@ -0,0 +1,20 @@
+--- Day 1: Inverse Captcha ---
+
+The night before Christmas, one of Santa's Elves calls you in a panic. "The printer's broken! We can't print the Naughty or Nice List!" By the time you make it to sub-basement 17, there are only a few minutes until midnight. "We have a big problem," she says; "there must be almost fifty bugs in this system, but nothing else can print The List. Stand in this square, quick! There's no time to explain; if you can convince them to pay you in stars, you'll be able to--" She pulls a lever and the world goes blurry.
+
+When your eyes can focus again, everything seems a lot more pixelated than before. She must have sent you inside the computer! You check the system clock: 25 milliseconds until midnight. With that much time, you should be able to collect all fifty stars by December 25th.
+
+Collect stars by solving puzzles. Two puzzles will be made available on each day millisecond in the advent calendar; the second puzzle is unlocked when you complete the first. Each puzzle grants one star. Good luck!
+
+You're standing in a room with "digitization quarantine" written in LEDs along one wall. The only door is locked, but it includes a small interface. "Restricted Area - Strictly No Digitized Users Allowed."
+
+It goes on to explain that you may only leave by solving a captcha to prove you're not a human. Apparently, you only get one millisecond to solve the captcha: too fast for a normal human, but it feels like hours to you.
+
+The captcha requires you to review a sequence of digits (your puzzle input) and find the sum of all digits that match the next digit in the list. The list is circular, so the digit after the last digit is the first digit in the list.
+
+For example:
+
+1122 produces a sum of 3 (1 + 2) because the first digit (1) matches the second digit and the third digit (2) matches the fourth digit.
+1111 produces 4 because each digit (all 1) matches the next.
+1234 produces 0 because no digit matches the next.
+91212129 produces 9 because the only digit that matches the next one is the last digit, 9.
\ No newline at end of file
diff --git a/day01/inverse_captcha.py b/day01/inverse_captcha.py
new file mode 100644
index 0000000..1246809
--- /dev/null
+++ b/day01/inverse_captcha.py
@@ -0,0 +1,23 @@
+import sys
+
+
+def sum_digits_if_identical(digit_one, digit_two):
+    result = 0
+    if digit_one == digit_two:
+        result = int(digit_one)
+    return result
+
+
+def get_captcha(input_num):
+    total_sum = 0
+    input_num_as_str = str(input_num)
+    prev_digit = input_num_as_str[-1]  # start with the final digit
+    for digit in input_num_as_str:
+        total_sum += sum_digits_if_identical(digit, prev_digit)
+        prev_digit = digit
+    return total_sum
+
+
+if __name__ == '__main__':
+    print('input: ' + sys.argv[1])
+    print('output: ' + str(get_captcha(sys.argv[1])))
diff --git a/day01/test_inverse_captcha.py b/day01/test_inverse_captcha.py
new file mode 100644
index 0000000..a1b3d67
--- /dev/null
+++ b/day01/test_inverse_captcha.py
@@ -0,0 +1,28 @@
+import unittest
+from inverse_captcha import get_captcha
+
+
+class TestInverseCaptcha(unittest.TestCase):
+    def test_1122(self):
+        start_num = 1122
+        expected = 3
+        result = get_captcha(start_num)
+        self.assertEqual(expected, result)
+
+    def test_1111(self):
+        start_num = 1111
+        expected = 4
+        result = get_captcha(start_num)
+        self.assertEqual(expected, result)
+
+    def test_1234(self):
+        start_num = 1234
+        expected = 0
+        result = get_captcha(start_num)
+        self.assertEqual(expected, result)
+
+    def test_91212129(self):
+        start_num = 91212129
+        expected = 9
+        result = get_captcha(start_num)
+        self.assertEqual(expected, result)