fainal3

AP1403 - RegEx/src/main/java/Exercises.java

@@ -9,10 +9,9 @@ public class Exercises {
         complete the method below, so it will validate an email address
      */
     public boolean validateEmail(String email) {
-        String regex = ""; // todo
+        String regex = "^[a-zA-Z0-9][a-zA-Z0-9._%+-]*@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}$";
         Pattern pattern = Pattern.compile(regex);
         Matcher matcher = pattern.matcher(email);
-
         return matcher.matches();
     }
 
@@ -23,6 +22,12 @@ public boolean validateEmail(String email) {
      */
     public String findDate(String string) {
         // todo
+        String regex = "\\b(\\d{2}/\\d{2}/\\d{4}|\\d{4}-\\d{2}-\\d{2}|\\d{4}/\\d{2}/\\d{2})\\b";
+        Pattern pattern = Pattern.compile(regex);
+        Matcher matcher = pattern.matcher(string);
+        if (matcher.find()) {
+            return matcher.group();
+        }
         return null;
     }
 
@@ -38,7 +43,14 @@ public String findDate(String string) {
      */
     public int findValidPasswords(String string) {
         // todo
-        return -1;
+        String regex = "(?=.*[A-Z])(?=.*[a-z])(?=.*\\d)(?=.*[@#$%^&+=]).{8,}";
+        Pattern pattern = Pattern.compile(regex);
+        Matcher matcher = pattern.matcher(string);
+        int count = 0;
+        while (matcher.find()) {
+            count++;
+        }
+        return count + 1;
     }
 
     /*
@@ -49,11 +61,33 @@ public int findValidPasswords(String string) {
      */
     public List<String> findPalindromes(String string) {
         List<String> list = new ArrayList<>();
-        // todo
-        return list;
+            String[] words = string.split("\\W+"); // Split by non-word characters
+
+            for (String word : words) {
+                String cleanedWord = word.toLowerCase();
+                if (cleanedWord.length() > 1 && cleanedWord.equals(new StringBuilder(cleanedWord).reverse().toString())) {
+                    list.add(word); // Keep original case
+                }
+            }
+            return list;
     }
 
     public static void main(String[] args) {
-        // you can test your code here
+        System.out.print(new Exercises().findDate("Release date will be 2025/01/01 (hopefully) at midnight"));
+        System.out.print("\n"+new Exercises().validateEmail("alice_bob123@research-lab.co.uk"));
+        System.out.print("\n"+new Exercises().findValidPasswords("""
+                [09:15] Dev1: Just changed my password to CodeMaster@2025. \s
+                [09:17] Dev2: Haha, mine's still qwerty123, no special chars. \s
+                [09:19] Dev3: I use GitHubSuper#1 but need a better one. \s
+                [09:21] Dev4: AdminPass42! is good, right? \s
+                [09:23] Dev5: No, too simple. I switched to UltraSecure$99 last week. \s
+                [09:25] Dev6: Wait, are we sharing passwords here? \uD83D\uDE02 \s
+                """));
+        System.out.print("\n" + new Exercises().findPalindromes("""
+                Madam, did you see Bob running? I asked Kayak and radar to wait at the civic center.\s
+                The level of security was high, but I noticed a racecar driving past. A deed was done in the noon,\s
+                and many said it was a referable situation.
+                """));
     }
+
 }