Given string str of alphanumeric characters, the task is to check whether the string is a valid PAN (Permanent Account Number) Card number or not by using Regular Expression.
The valid PAN Card number must satisfy the following conditions:
- It should be ten characters long.
- The first five characters should be any upper case alphabets.
- The next four-characters should be any number from 0 to 9.
- The last(tenth) character should be any upper case alphabet.
- It should not contain any white spaces.
Examples:
Input: str = “BNZAA2318J”
Output: true
Explanation:
The given string satisfies all the above mentioned conditions.Input: str = “23ZAABN18J”
Output: false
Explanation:
The given string not starts with upper case alphabets, therefore it is not a valid PAN Card number.Input: str = “BNZAA2318JM”
Output: false
Explanation:
The given string contains eleven characters, therefore it is not a valid PAN Card number.Input: str = “BNZAA23184”
Output: true
Explanation:
The last(tenth) character of this string is a numeric(0-9) character, therefore it is not a valid PAN Card number.Input: str = “BNZAA 23184”
Output: true
Explanation:
The given string contains white spaces, therefore it is not a valid PAN Card number.
Approach: This problem can be solved by using Regular Expression.
- Get the string.
- Create a regular expression to validate the PAN Card number as mentioned below:
regex = "[A-Z]{5}[0-9]{4}[A-Z]{1}";
- Where:
- [A-Z]{5} represents the first five upper case alphabets which can be A to Z.
- [0-9]{4} represents the four numbers which can be 0-9.
- [A-Z]{1} represents the one upper case alphabet which can be A to Z.
- Match the given string with the regex, in Java, this can be done using Pattern.matcher().
- Return true if the string matches with the given regex, else return false.
Below is the implementation of the above approach:
Java
// Java program to validate the // PAN Card number using Regular Expression import java.util.regex.*; class GFG { // Function to validate the PAN Card number. public static boolean isValidPanCardNo(String panCardNo) { // Regex to check valid PAN Card number. String regex = "[A-Z]{5}[0-9]{4}[A-Z]{1}" ; // Compile the ReGex Pattern p = Pattern.compile(regex); // If the PAN Card number // is empty return false if (panCardNo == null ) { return false ; } // Pattern class contains matcher() method // to find matching between given // PAN Card number using regular expression. Matcher m = p.matcher(panCardNo); // Return if the PAN Card number // matched the ReGex return m.matches(); } // Driver Code. public static void main(String args[]) { // Test Case 1: String str1 = "BNZAA2318J" ; System.out.println(isValidPanCardNo(str1)); // Test Case 2: String str2 = "23ZAABN18J" ; System.out.println(isValidPanCardNo(str2)); // Test Case 3: String str3 = "BNZAA2318JM" ; System.out.println(isValidPanCardNo(str3)); // Test Case 4: String str4 = "BNZAA23184" ; System.out.println(isValidPanCardNo(str4)); // Test Case 5: String str5 = "BNZAA 23184" ; System.out.println(isValidPanCardNo(str5)); } } |
Python3
# Python3 program to validate the # PAN Card number using Regular # Expression import re # Function to validate the # PAN Card number. def isValidPanCardNo(panCardNo): # Regex to check valid # PAN Card number regex = "[A-Z]{5}[0-9]{4}[A-Z]{1}" # Compile the ReGex p = re. compile (regex) # If the PAN Card number # is empty return false if (panCardNo = = None ): return False # Return if the PAN Card number # matched the ReGex if (re.search(p, panCardNo) and len (panCardNo) = = 10 ): return True else : return False # Driver Code. # Test Case 1: str1 = "BNZAA2318J" print (isValidPanCardNo(str1)) # Test Case 2: str2 = "23ZAABN18J" print (isValidPanCardNo(str2)) # Test Case 3: str3 = "BNZAA2318JM" print (isValidPanCardNo(str3)) # Test Case 4: str4 = "BNZAA23184" print (isValidPanCardNo(str4)) # Test Case 5: str5 = "BNZAA 23184" print (isValidPanCardNo(str5)) # This code is contributed by avanitrachhadiya2155 |
C++
// C++ program to validate the // PAN Card number using Regular // Expression #include <iostream> #include <regex> using namespace std; // Function to validate the // PAN Card number. bool isValidPanCardNo(string panCardNo) { // Regex to check valid // PAN Card number. const regex pattern( "[A-Z]{5}[0-9]{4}[A-Z]{1}" ); // If the PAN Card number // is empty return false if (panCardNo.empty()) { return false ; } // Return true if the PAN Card number // matched the ReGex if (regex_match(panCardNo, pattern)) { return true ; } else { return false ; } } // Driver Code int main() { // Test Case 1: string str1 = "BNZAA2318J" ; cout << isValidPanCardNo(str1) << endl; // Test Case 2: string str2 = "23ZAABN18J" ; cout << isValidPanCardNo(str2) << endl; // Test Case 3: string str3 = "BNZAA2318JM" ; cout << isValidPanCardNo(str3) << endl; // Test Case 4: string str4 = "BNZAA23184" ; cout << isValidPanCardNo(str4) << endl; // Test Case 5: string str5 = "BNZAA 23184" ; cout << isValidPanCardNo(str5) << endl; return 0; } // This code is contributed by yuvraj_chandra |
true false false false false
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