diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..13566b8
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
diff --git a/.idea/First-Assignment-RegEx.iml b/.idea/First-Assignment-RegEx.iml
new file mode 100644
index 0000000..d6ebd48
--- /dev/null
+++ b/.idea/First-Assignment-RegEx.iml
@@ -0,0 +1,9 @@
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/compiler.xml b/.idea/compiler.xml
new file mode 100644
index 0000000..7f4b56a
--- /dev/null
+++ b/.idea/compiler.xml
@@ -0,0 +1,13 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/encodings.xml b/.idea/encodings.xml
new file mode 100644
index 0000000..60c7054
--- /dev/null
+++ b/.idea/encodings.xml
@@ -0,0 +1,7 @@
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml
new file mode 100644
index 0000000..712ab9d
--- /dev/null
+++ b/.idea/jarRepositories.xml
@@ -0,0 +1,20 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..cb61c96
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,14 @@
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..9438c0f
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/AP1403 - RegEx/src/main/java/Exercises.java b/AP1403 - RegEx/src/main/java/Exercises.java
index 8ca6090..6e691e4 100644
--- a/AP1403 - RegEx/src/main/java/Exercises.java
+++ b/AP1403 - RegEx/src/main/java/Exercises.java
@@ -5,55 +5,106 @@
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]{2,7}$";
Pattern pattern = Pattern.compile(regex);
Matcher matcher = pattern.matcher(email);
return matcher.matches();
}
- /*
- this method should find a date in string
- note that it should be in british or american format
- if there's no match for a date, return null
- */
public String findDate(String string) {
- // todo
+ String regex = "\\b(\\d{1,2}[/-]\\d{1,2}[/-]\\d{2,4}|\\d{4}[/-]\\d{1,2}[/-]\\d{1,2})\\b";
+ Pattern pattern = Pattern.compile(regex);
+ Matcher matcher = pattern.matcher(string);
+
+ while (matcher.find()) {
+ String date = matcher.group();
+
+ String[] parts;
+ if (date.contains("/")) {
+ parts = date.split("/");
+ } else if (date.contains("-")) {
+ parts = date.split("-");
+ } else {
+ continue;
+ }
+
+ int day, month, year;
+ if (parts[0].length() == 4) {
+ year = Integer.parseInt(parts[0]);
+ month = Integer.parseInt(parts[1]);
+ day = Integer.parseInt(parts[2]);
+ } else {
+ day = Integer.parseInt(parts[0]);
+ month = Integer.parseInt(parts[1]);
+ year = Integer.parseInt(parts[2]);
+ }
+
+ if (month < 1 || month > 12) {
+ continue;
+ }
+ if (day < 1 || day > 31) {
+ continue;
+ }
+ if ((month == 4 || month == 6 || month == 9 || month == 11) && day > 30) {
+ continue;
+ }
+ if (month == 2) {
+ boolean isLeapYear = (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);
+ if (day > 29 || (day == 29 && !isLeapYear)) {
+ continue;
+ }
+ }
+
+ return date;
+ }
+
return null;
}
- /*
- given a string, implement the method to detect all valid passwords
- then, it should return the count of them
-
- a valid password has the following properties:
- - at least 8 characters
- - has to include at least one uppercase letter, and at least a lowercase
- - at least one number and at least a special char "!@#$%^&*"
- - has no white-space in it
- */
public int findValidPasswords(String string) {
- // todo
- return -1;
- }
+ String regex = "(?=\\S{8,})(?=\\S*[a-z])(?=\\S*[A-Z])(?=\\S*\\d)(?=\\S*[!@#$%^&*])\\S+";
+ Pattern pattern = Pattern.compile(regex);
+ Matcher matcher = pattern.matcher(string);
- /*
- you should return a list of *words* which are palindromic
- by word we mean at least 3 letters with no whitespace in it
+ int count = 0;
+ while (matcher.find()) {
+ String password = matcher.group();
+ if (!password.matches(".*\\s.*")) {
+ count++;
+ }
+ }
+ return count;
+ }
- note: your implementation should be case-insensitive, e.g. Aba -> is palindrome
- */
public List findPalindromes(String string) {
List list = new ArrayList<>();
- // todo
+
+ String regex = "\\b[a-zA-Z]{3,}\\b";
+ Pattern pattern = Pattern.compile(regex);
+ Matcher matcher = pattern.matcher(string);
+
+ while (matcher.find()) {
+ String word = matcher.group();
+ String lowerCaseWord = word.toLowerCase();
+
+ boolean isPalindrome = true;
+ int length = lowerCaseWord.length();
+ for (int i = 0; i < length / 2; i++) {
+ if (lowerCaseWord.charAt(i) != lowerCaseWord.charAt(length - 1 - i)) {
+ isPalindrome = false;
+ break;
+ }
+ }
+
+ if (isPalindrome) {
+ list.add(word);
+ }
+ }
+
return list;
}
-
public static void main(String[] args) {
- // you can test your code here
}
}
diff --git a/First-Assignment-RegEx/AP1403 - RegEx/.idea/workspace.xml b/First-Assignment-RegEx/AP1403 - RegEx/.idea/workspace.xml
new file mode 100644
index 0000000..66478c6
--- /dev/null
+++ b/First-Assignment-RegEx/AP1403 - RegEx/.idea/workspace.xml
@@ -0,0 +1,65 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ 1741376726574
+
+
+ 1741376726574
+
+
+
+
+
+
+
+
\ No newline at end of file