walrus

advent day 3/advent day 3.java

@@ -0,0 +1,91 @@
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.util.Scanner;
+
+class DayThree {
+    public static void main(String[] args) {
+        int treeCount = 0;
+        int xLoc = 0;
+        int yLoc = 0;
+        int maxRows = 1;
+        int xStep = 1;
+        int yStep = 2;
+        int[] rowTreeIndex;
+        int[][] trees;
+        int indexCounter = 0;
+        trees = new int[400][31];
+        try {
+            File inputFile = new File("input.txt");
+            Scanner readFile = new Scanner(inputFile);
+            while (readFile.hasNextLine()) {
+                String inputLine = readFile.nextLine();
+                rowTreeIndex = findTrees(inputLine);
+                for (int i = 0; i < rowTreeIndex.length; i++) {
+                    trees[indexCounter][i] = rowTreeIndex[i];
+                    // System.out.println(trees[indexCounter][i]);
+                }
+                indexCounter++;
+                maxRows++;
+            }
+            // System.out.println(maxRows);
+            readFile.close();
+        } catch (FileNotFoundException e) {
+            System.out.println("crapeth");
+        }
+
+        while (yLoc != maxRows) {
+            // System.out.println(xLoc % 31);
+            if (hitTree(trees[yLoc], xLoc % 31, yLoc)) {
+                treeCount++;
+            }
+            xLoc = xStep + xLoc;
+            yLoc = yStep + yLoc;
+        }
+        System.out.println(treeCount);
+    }
+
+    public static int[] findTrees(String inputString) {
+        int indexCount = 0;
+        int[] treeIndex;
+        char[] stringToChar;
+        treeIndex = fill();
+        stringToChar = inputString.toCharArray();
+        for (int i = 0; i < inputString.length(); i++) {
+            // System.out.println(stringToChar[i]);
+            if (stringToChar[i] == '#') {
+                treeIndex[indexCount] = i;
+                indexCount++;
+            }
+        }
+        return treeIndex;
+    }
+
+    public static boolean hitTree(int[] inputArray, int inputX, int inputY) {
+        boolean treeHit = false;
+        // System.out.println(inputY);
+        // System.out.print(" ");
+        for (int i = 0; i < inputArray.length; i++) {
+            // System.out.print(inputArray[i]);
+            // System.out.print(" ");
+        }
+
+        System.out.println();
+        for (int i = 0; i < inputArray.length; i++) {
+            if (inputX == inputArray[i]) {
+                treeHit = true;
+            }
+        }
+
+        return treeHit;
+    }
+
+    public static int[] fill() {
+        int[] whale;
+        whale = new int[31];
+        for (int i = 0; i < 31; i++) {
+            whale[i] = 40;
+        }
+        return whale;
+
+    }
+}

advent day 3/input.txt

@@ -0,0 +1,323 @@
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