Given some International Tracking Of Exports data, the task is to check if they are valid or not using regular expressions. Rules for the valid International Tracking Of Exports are :
- It is an alphanumeric string containing UpperCase letters and digits.
- It either follows the pattern 2 Letters(A-Z)+ 9 Digits+GB Or 12 Digits(0-9).
- It should not contain whitespaces and other special characters.
- If it starts with an Upper case letter then it should end with “GB”
- Its length may vary from 12 to 13.
- If it starts with an alphabet letter then its length should be equal to 13 e.g.AA123456789GB
- If it starts with a digit, Its length should be equal to 12 e.g.123456789012
Examples:
Input: str = ”AA123456789GB?
Output: TrueInput: str = ”12345678901?
Output: False
Explanation: As it starts with a digit so its length should be equal to 12
Approach: The problem can be solved based on the following idea:
Create a regex pattern to validate the number as written below:
regex = “^([0 – 9]{12}|[A – Z]{2}[0 – 9]{9}GB)$“Where,
- ^ : Start of the string
- [0-9]{12}: This pattern will match 12 of the preceding items if they are digits(0-9)
- [A-Z]{2}: This pattern will match two of the preceding items if they are Uppercase Alphabet letters
- [0-9]{9}: This pattern will allow 9 of the preceding tokens if they are digits
- GB: It will allow exactly “GB”
- $: End of the string
Follow the below steps to implement the idea:
- Create a regex expression for International Tracking Of Exports.
- Use Pattern class to compile the regex formed.
- Use the matcher function to check whether the Tracking id is valid or not.
- If it is valid, return true. Otherwise, return false.
Below is the implementation of the above approach.
// C++ program to validate the // International Tracking Of Exports // using Regular Expression #include <bits/stdc++.h> #include <regex> using namespace std;
// Function to validate the // International Tracking Of Exports string isValid_Exports(string str) { // Regex to check valid
// International Tracking Of Exports
const regex pattern( "^([0-9]{12}|[A-Z]{2}[0-9]{9}GB)$" );
// If the str
// is empty return false
if (str.empty()) {
return "false" ;
}
// Return true if the str
// matched the ReGex
if (regex_match(str, pattern)) {
return "true" ;
}
else {
return "false" ;
}
} // Driver Code int main()
{ // Test Case 1:
string str1 = "AA123456789GB" ;
cout << isValid_Exports(str1) << endl;
// Test Case 2:
string str2 = "123456789012" ;
cout << isValid_Exports(str2) << endl;
// Test Case 3:
string str3 = "12345678901" ;
cout << isValid_Exports(str3) << endl;
// Test Case 4:
string str4 = "AA123456789" ;
cout << isValid_Exports(str4) << endl;
// Test Case 5:
string str5 = "AA12345678GB" ;
cout << isValid_Exports(str5) << endl;
return 0;
} |
// Java program to validate the // International Tracking Of Exports // using Regular Expression import java.util.regex.*;
class GFG {
// Function to validate the
// International Tracking Of Exports
public static boolean isValid_Exports(String str)
{
// Regex to check valid International
// Tracking Of Exports
String regex = "^([0-9]{12}|[A-Z]{2}[0-9]{9}GB)$" ;
// Compile the ReGex
Pattern p = Pattern.compile(regex);
// If the str
// is empty return false
if (str == null ) {
return false ;
}
// Pattern class contains matcher()
// method to find matching between
// given str using regular expression.
Matcher m = p.matcher(str);
// Return if the str
// matched the ReGex
return m.matches();
}
// Driver Code.
public static void main(String args[])
{
// Test Case 1:
String str1 = "AA123456789GB" ;
System.out.println(isValid_Exports(str1));
// Test Case 2:
String str2 = "123456789012" ;
System.out.println(isValid_Exports(str2));
// Test Case 3:
String str3 = "12345678901" ;
System.out.println(isValid_Exports(str3));
// Test Case 4:
String str4 = "AA123456789" ;
System.out.println(isValid_Exports(str4));
// Test Case 5:
String str5 = "AA12345678GB" ;
System.out.println(isValid_Exports(str5));
}
} |
# Python3 program to validate # International Tracking Of Exports using Regex import re
# Function to validate # International Tracking Of Exports def isValid_Exports( str ):
# Regex to check valid International
# Tracking Of Exports
regex = "^([0-9]{12}|[A-Z]{2}[0-9]{9}GB)$"
# Compile the ReGex
p = re. compile (regex)
# If the string is empty
# return false
if ( str = = None ):
return "false"
# Return if the string
# matched the ReGex
if (re.search(p, str )):
return "true"
else :
return "false"
# Driver code if __name__ = = '__main__' :
# Test Case 1:
str1 = "AA123456789GB"
print (isValid_Exports(str1))
# Test Case 2:
str2 = "123456789012"
print (isValid_Exports(str2))
# Test Case 3:
str3 = "12345678901"
print (isValid_Exports(str3))
# Test Case 4:
str4 = "AA123456789"
print (isValid_Exports(str4))
# Test Case 5:
str5 = "AA12345678GB"
print (isValid_Exports(str5))
|
// C# program to validate the // International Tracking Of Exports // using Regular Expressions using System;
using System.Text.RegularExpressions;
class GFG {
// Main Method
static void Main( string [] args)
{
// Input strings to Match
// International Tracking Of Exports
string [] str = { "AA123456789GB" , "123456789012" ,
"12345678901" , "AA123456789" ,
"AA12345678GB" };
foreach ( string s in str)
{
Console.WriteLine(isValid_Exports(s) ? "true"
: "false" );
}
Console.ReadKey();
}
// method containing the regex
public static bool isValid_Exports( string str)
{
string strRegex
= @"^([0-9]{12}|[A-Z]{2}[0-9]{9}GB)$" ;
Regex re = new Regex(strRegex);
if (re.IsMatch(str))
return ( true );
else
return ( false );
}
} |
// Javascript program to validate // International Tracking Of Exports //using Regular Expression // Function to validate the // International Tracking Of Exports function isValid_Exports(str) {
// Regex to check valid
// International Tracking Of Exports
let regex = new RegExp(/^([0-9]{12}|[A-Z]{2}[0-9]{9}GB)$/);
// if str
// is empty return false
if (str == null ) {
return "false" ;
}
// Return true if the str
// matched the ReGex
if (regex.test(str) == true ) {
return "true" ;
}
else {
return "false" ;
}
} // Driver Code // Test Case 1: let str1 = "AA123456789GB" ;
console.log(isValid_Exports(str1)); // Test Case 2: let str2 = "123456789012" ;
console.log(isValid_Exports(str2)); // Test Case 3: let str3 = "12345678901" ;
console.log(isValid_Exports(str3)); // Test Case 4: let str4 = "AA123456789" ;
console.log(isValid_Exports(str4)); // Test Case 5: let str5 = "AA12345678GB" ;
console.log(isValid_Exports(str5)); |
true true false false false
Time Complexity: O(N) for each test case, where N is the length of the given string.
Auxiliary Space: O(1)
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