fix: another Account, Part two

Trebuchet/CalibrationPartTwo.java

@@ -1,10 +1,30 @@
+import java.io.BufferedReader;
+import java.io.StringReader;
 import java.util.HashMap;
-import java.util.Map;
 
+/**
+ * CalibrationPartTwo
+ */
 public class CalibrationPartTwo {
+
   public static void main(String[] args) {
+
+    // HashMap to map word representations of digits to their corresponding numeric
+    // values
+    HashMap<String, Integer> stringToDigit = new HashMap<>();
+    stringToDigit.put("one", 1);
+    stringToDigit.put("two", 2);
+    stringToDigit.put("three", 3);
+    stringToDigit.put("four", 4);
+    stringToDigit.put("five", 5);
+    stringToDigit.put("six", 6);
+    stringToDigit.put("seven", 7);
+    stringToDigit.put("eight", 8);
+    stringToDigit.put("nine", 9);
+
+    // String input
     String str = """
-        two1nine
+              two1nine
         eightwothree
         abcone2threexyz
         xtwone3four
@@ -12,30 +32,67 @@ public class CalibrationPartTwo {
         zoneight234
         7pqrstsixteen
               """;
-    HahsMap<String, String> elements = new HashMap<>();
-    elements.put("one", "1");
-    elements.put("two", "2");
-    elements.put("three", "3");
-    elements.put("four", "4");
-    elements.put("five", "5");
-    elements.put("six", "6");
-    elements.put("seven", "7");
-    elements.put("eight", "8");
-    elements.put("nine", "9");
 
     try {
-      for (String line : str.split("\n")) {
-        for (Map.Entry<String, String> entry : elements.entrySet()) {
-          line.replace(entry.getKey(), entry.getValue());
-          int first = -1;
-          int last = -1;
+      BufferedReader br = new BufferedReader(new StringReader(str));
+      String line;
+      int total = 0;
+
+      while ((line = br.readLine()) != null) {
+        if (line.trim().isEmpty()) {
+          continue; // Skip empty lines
         }
-        for (String c : line.split("")) {
-          System.out.println(c);
+
+        StringBuilder wordBuffer = new StringBuilder();
+        int firstDigit = -1;
+        int lastDigit = -1;
+
+        for (int i = 0; i < line.length(); i++) {
+          char c = line.charAt(i);
+
+          // Build a word if we encounter alphabetic characters
+          if (Character.isLetter(c)) {
+            wordBuffer.append(c);
+            String currentWord = wordBuffer.toString();
+
+            // Check if the current word matches a digit word
+            if (stringToDigit.containsKey(currentWord)) {
+              int num = stringToDigit.get(currentWord);
+              if (firstDigit == -1) {
+                firstDigit = num;
+              }
+              lastDigit = num;
+              wordBuffer.setLength(0); // Clear the buffer after processing the word
+            }
+          }
+
+          // If we encounter a digit, process it directly
+          else if (Character.isDigit(c)) {
+            int num = Character.getNumericValue(c);
+            if (firstDigit == -1) {
+              firstDigit = num;
+            }
+            lastDigit = num;
+          }
+
+          // If we encounter a non-alphabetic, non-digit character, reset the word buffer
+          else {
+            wordBuffer.setLength(0);
+          }
+        }
+
+        // Combine the first and last digits
+        if (firstDigit != -1 && lastDigit != -1) {
+          int sum = (firstDigit * 10) + lastDigit;
+          System.out.println(sum);
+          total += sum;
         }
       }
+
+      // Output the final total
+      System.out.println("Total for Part Two = " + total);
     } catch (Exception e) {
-      // TODO: handle exception
+      e.printStackTrace();
     }
   }
 }

Trebuchet/TrebuchetPartOne.java

@@ -0,0 +1,82 @@
+
+//import java.io.BufferedReader;
+//import java.io.FileReader;
+//import java.io.StringReader;
+//
+//public class TrebuchetPartOne {
+//  public static void main(String[] args) {
+//    String str = """
+//        1abc2
+//        pqr3stu8vwx
+//        a1b2c3d4e5f
+//
+//        treb7uchet
+//              """;
+//
+//    try {
+//      String line;
+//      int total = 0;
+//      // BufferedReader br = new BufferedReader(new StringReader(str));
+//      BufferedReader br = new BufferedReader(new FileReader("/home/ilyes/AdventOfCode/Trebuchet/snowyCoordinates.txt"));
+//      while ((line = br.readLine()) != null) {
+//        if (line.trim().isEmpty()) {
+//          continue;
+//        }
+//        int first = -1;
+//        int last = -1;
+//        for (String s : line.split("")) {
+//          if (Character.isDigit(s.charAt(0))) {
+//            if (first == -1) {
+//              first = Integer.parseInt(s);
+//            }
+//            last = Integer.parseInt(s);
+//          }
+//        }
+//        first = first * 10;
+//        total += first + last;
+//      }
+//      System.out.println(total);
+//      br.close();
+//    } catch (Exception e) {
+//      // TODO: handle exception
+//    }
+//  }
+//}
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+public class TrebuchetPartOne {
+  public static void main(String[] args) {
+    String filePath = "/home/ilyes/AdventOfCode/Trebuchet/snowyCoordinates.txt";
+
+    try {
+      int total = Files.lines(Paths.get(filePath))
+          .filter(line -> !line.trim().isEmpty())
+          .mapToInt(TrebuchetPartOne::calculateCalibrationValue)
+          .sum();
+
+      System.out.println("Total calibration value: " + total);
+    } catch (IOException e) {
+      System.err.println("Error reading file: " + e.getMessage());
+    }
+  }
+
+  private static int calculateCalibrationValue(String line) {
+    int first = -1;
+    int last = -1;
+
+    for (char c : line.toCharArray()) {
+      if (Character.isDigit(c)) {
+        last = Character.getNumericValue(c);
+        if (first == -1) {
+          first = last;
+        }
+      }
+    }
+
+    return (first != -1) ? first * 10 + last : 0;
+  }
+}

Trebuchet/TrebuchetPartTwo.java

@@ -0,0 +1,95 @@
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.StringReader;
+import java.util.HashMap;
+import java.util.Map;
+
+public class TrebuchetPartTwo {
+  public static void main(String[] args) {
+    // Mapping of words to string digits
+    HashMap<String, String> stringToDigit = new HashMap<>();
+    stringToDigit.put("one", "1");
+    stringToDigit.put("two", "2");
+    stringToDigit.put("three", "3");
+    stringToDigit.put("four", "4");
+    stringToDigit.put("five", "5");
+    stringToDigit.put("six", "6");
+    stringToDigit.put("seven", "7");
+    stringToDigit.put("eight", "8");
+    stringToDigit.put("nine", "9");
+
+    // Sample string input
+    String str = """
+        two1nine
+        eightwothree
+        abcone2threexyz
+        xtwone3four
+        4nineeightseven2
+        zoneight234
+        7pqrstsixteen
+        """;
+
+    try {
+      String line;
+      int total = 0;
+      // Read the string line by line
+      BufferedReader br = new BufferedReader(new FileReader("/home/ilyes/AdventOfCode/Trebuchet/snowyCoordinates.txt"));
+      // // stringreader(str)
+      while ((line = br.readLine()) != null) {
+        // Skip empty lines
+        if (line.trim().isEmpty()) {
+          continue;
+        }
+
+        String firstDigit = null;
+        String lastDigit = null;
+
+        // Find the first digit
+        for (int i = 0; i < line.length(); i++) {
+          char c = line.charAt(i);
+          if (Character.isDigit(c)) {
+            firstDigit = String.valueOf(c);
+            break;
+          }
+          for (Map.Entry<String, String> entry : stringToDigit.entrySet()) {
+            if (line.startsWith(entry.getKey(), i)) {
+              firstDigit = entry.getValue();
+              break;
+            }
+          }
+          if (firstDigit != null)
+            break;
+        }
+
+        // Find the last digit
+        for (int i = line.length() - 1; i >= 0; i--) {
+          char c = line.charAt(i);
+          if (Character.isDigit(c)) {
+            lastDigit = String.valueOf(c);
+            break;
+          }
+          for (Map.Entry<String, String> entry : stringToDigit.entrySet()) {
+            if (line.startsWith(entry.getKey(), i)) {
+              lastDigit = entry.getValue();
+              break;
+            }
+          }
+          if (lastDigit != null)
+            break;
+        }
+
+        // Combine first and last digits if found
+        if (firstDigit != null && lastDigit != null) {
+          int sum = (Integer.parseInt(firstDigit) * 10) + Integer.parseInt(lastDigit);
+
+          total += sum;
+        }
+      }
+      // Output the total sum
+      System.out.println("Total for Part Two = " + total);
+      br.close();
+    } catch (Exception e) {
+      e.printStackTrace();
+    }
+  }
+}