mouredev#39 - Java

Author: ASJordi

Roadmap/39 - BATMAN DAY/java/asjordi.java

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+import java.time.DayOfWeek;
+import java.time.LocalDate;
+import java.time.temporal.TemporalAdjusters;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Random;
+
+public class Main {
+
+    public static void main(String[] args) {
+        calculateBatmanDay();
+        batcaveSecuritySystem();
+    }
+
+    /*
+        RETO 1:
+        Crea un programa que calcule cuándo se va a celebrar el Batman Day hasta su 100 aniversario.
+        El Batman Day se celebra el tercer sábado de septiembre de cada año.
+     */
+    public static void calculateBatmanDay() {
+        List<LocalDate> batmanDayAnniversary = new LinkedList<>();
+        int year = 1939;
+
+        for (int i = 0; i < 100; i++) {
+            LocalDate firstDayOfSeptember = LocalDate.of(year, 9, 1);
+            LocalDate firstSaturday = firstDayOfSeptember.with(TemporalAdjusters.firstInMonth(DayOfWeek.SATURDAY));
+            LocalDate thirdSaturday = firstSaturday.plusWeeks(2);
+            batmanDayAnniversary.add(thirdSaturday);
+            year++;
+        }
+
+        batmanDayAnniversary.forEach(day -> System.out.println("El sábado de la tercera semana de septiembre de " + day.getYear() + " es el día " + day.getDayOfMonth()));
+    }
+
+    /*
+        Reto 2:
+     */
+    public static void batcaveSecuritySystem() {
+        Sensor[][] grid = new Sensor[20][20];
+        Random random = new Random();
+
+        for (int x = 0; x < 20; x++) {
+            for (int y = 0; y < 20; y++) {
+                grid[x][y] = new Sensor(x, y, random.nextInt(11));
+            }
+        }
+
+        int centerX = 0, centerY = 0, maxSum = 0;
+
+        for (int x = 0; x <= 17; x++) {
+            for (int y = 0; y <= 17; y++) {
+                int currSum = calculateSum(grid, x, y);
+                if (currSum > maxSum) {
+                    maxSum = currSum;
+                    centerX = x + 1;
+                    centerY = y + 1;
+                }
+            }
+        }
+
+        int distanceToBatcave = Math.abs(centerX) + Math.abs(centerY);
+
+        System.out.println("Most intense area is at (" + centerX + ", " + centerY + ") with a sum of " + maxSum);
+        System.out.println("Distance to Batcave: " + distanceToBatcave);
+        System.out.println("Security protocol should be activated? " + ((maxSum > 20) ? "YES" : "NO"));
+    }
+
+    private static int calculateSum(Sensor[][] grid, int x, int y) {
+        int sum = 0;
+        for (int i = x; i < x + 3; i++) {
+            for (int j = y; j < y + 3; j++) {
+                sum += grid[i][j].level;
+            }
+        }
+        return sum;
+    }
+
+    record Sensor(int x, int y, int level) {}
+}