1 files changed, 189 insertions, 0 deletions
diff --git a/day14/day14.java b/day14/day14.java
new file mode 100644
index 0000000..000fc5e
--- /dev/null
+++ b/day14/day14.java
@@ -0,0 +1,189 @@
+import java.io.IOException;
+import java.io.RandomAccessFile;
+import java.util.ArrayList;
+
+public class day14 {
+  public static void main(String args[]) throws IOException {
+    RandomAccessFile input = new RandomAccessFile("input", "r");
+    System.out.println("Day 14 Part 1: " + part1(input));
+    input.seek(0);
+    System.out.println("Day 14 Part 2: " + part2(input));
+    input.close();
+  }
+
+  public static String part1(RandomAccessFile input) throws IOException {
+    ArrayList<ArrayList<Tile>> platform = new ArrayList<>();
+
+    String line;
+    while ((line = input.readLine()) != null) {
+      ArrayList<Tile> row = new ArrayList<>();
+      for (char ch: line.toCharArray()) {
+        switch (ch) {
+          case 'O':
+            row.add(Tile.Round);
+            break;
+          case '#':
+            row.add(Tile.Cube);
+            break;
+          case '.':
+            row.add(Tile.Empty);
+            break;
+        }
+      }
+      platform.add(row);
+    }
+
+    tipNorth(platform);
+
+    int load = 0, rows = platform.size();
+    for (int r = 0; r < rows; r++) {
+      for (Tile t: platform.get(r)) {
+        if (t == Tile.Round) {
+          load += (rows - r);
+        }
+      }
+    }
+
+    return Integer.toString(load);
+  }
+
+  public static String part2(RandomAccessFile input) throws IOException {
+    return "WIP";
+    /*
+    ArrayList<ArrayList<Tile>> platform = new ArrayList<>();
+
+    String line;
+    while ((line = input.readLine()) != null) {
+      ArrayList<Tile> row = new ArrayList<>();
+      for (char ch: line.toCharArray()) {
+        switch (ch) {
+          case 'O':
+            row.add(Tile.Round);
+            break;
+          case '#':
+            row.add(Tile.Cube);
+            break;
+          case '.':
+            row.add(Tile.Empty);
+            break;
+        }
+      }
+      platform.add(row);
+    }
+
+    for (long l = 0; l < 1000000000; l++) {
+      tipNorth(platform);
+      tipWest(platform);
+      tipSouth(platform);
+      tipEast(platform);
+    }
+
+    int load = 0, rows = platform.size();
+    for (int r = 0; r < rows; r++) {
+      for (Tile t: platform.get(r)) {
+        if (t == Tile.Round) {
+          load += (rows - r);
+        }
+      }
+    }
+
+    return Integer.toString(load);
+    */
+  }
+
+  static enum Tile {
+    Round,
+    Cube,
+    Empty
+  }
+
+  private static void tipNorth(ArrayList<ArrayList<Tile>> platform) {
+    int rows = platform.size(), cols = platform.get(0).size();
+    for (int r = 0; r < rows; r++) {
+      for (int c = 0; c < cols; c++) {
+        if (platform.get(r).get(c) != Tile.Round) {
+          continue;
+        }
+
+        int rat = r;
+        while (rat > 0) {
+          if (platform.get(rat - 1).get(c) == Tile.Empty) {
+            platform.get(rat - 1).set(c, Tile.Round);
+            platform.get(rat).set(c, Tile.Empty);
+            rat -= 1;
+          } else {
+            break;
+          }
+        }
+      }
+    }
+  }
+
+  /*
+  private static void tipSouth(ArrayList<ArrayList<Tile>> platform) {
+    int rows = platform.size(), cols = platform.get(0).size();
+    for (int r = (rows - 1); r >= 0; r--) {
+      for (int c = 0; c < cols; c++) {
+        if (platform.get(r).get(c) != Tile.Round) {
+          continue;
+        }
+
+        int rat = r;
+        while (rat < (rows - 1)) {
+          if (platform.get(rat + 1).get(c) == Tile.Empty) {
+            platform.get(rat + 1).set(c, Tile.Round);
+            platform.get(rat).set(c, Tile.Empty);
+            rat += 1;
+          } else {
+            break;
+          }
+        }
+      }
+    }
+  }
+
+  private static void tipWest(ArrayList<ArrayList<Tile>> platform) {
+    int rows = platform.size(), cols = platform.get(0).size();
+    for (int r = 0; r < rows; r++) {
+      for (int c = 0; c < cols; c++) {
+        if (platform.get(r).get(c) != Tile.Round) {
+          continue;
+        }
+
+        int cat = c;
+        while (cat > 0) {
+          if (platform.get(r).get(cat - 1) == Tile.Empty) {
+            platform.get(r).set(cat - 1, Tile.Round);
+            platform.get(r).set(cat, Tile.Empty);
+            cat -= 1;
+          } else {
+            break;
+          }
+        }
+      }
+    }
+  }
+
+  private static void tipEast(ArrayList<ArrayList<Tile>> platform) {
+    int rows = platform.size(), cols = platform.get(0).size();
+    for (int r = 0; r < rows; r++) {
+      for (int c = (cols - 1); c >= 0; c--) {
+        if (platform.get(r).get(c) != Tile.Round) {
+          continue;
+        }
+
+        int cat = c;
+        while (cat < (cols - 1)) {
+          if (platform.get(r).get(cat + 1) == Tile.Empty) {
+            platform.get(r).set(cat + 1, Tile.Round);
+            platform.get(r).set(cat, Tile.Empty);
+            cat += 1;
+          } else {
+            break;
+          }
+        }
+      }
+    }
+  }
+  */
+}