GeeksforGeeks

How to validate CVV number using Regular Expression

Last Updated: 21 December 2022

Given string str, the task is to check whether it is a valid CVV (Card Verification Value) number or not by using Regular Expression.The valid CVV (Card Verification Value...read more

Strings

Pattern Searching

DSA

java-regular-expression

CPP-regex

regular-expression

Program to remove HTML tags from a given String

Last Updated: 21 December 2022

Given a string str that contains some HTML tags, the task is to remove all the tags present in the given string str.Examples:Input: str = "divbGeeks for Geeks/b/div"Output...read more

Strings

DSA

java-regular-expression

HTML-Tags

CPP-regex

regular-expression

How to validate MasterCard number using Regular Expression

Last Updated: 20 December 2022

Given string str, the task is to check whether the given string is a valid Master Card number or not by using Regular Expression.The valid Master Card number must satisfy ...read more

Strings

Pattern Searching

DSA

java-regular-expression

CPP-regex

regular-expression

How to validate Visa Card number using Regular Expression

Last Updated: 20 December 2022

Given a string str, the task is to check whether the given string is a valid Visa Card number or not by using Regular Expression.The valid Visa Card number must satisfy th...read more

Strings

Pattern Searching

DSA

java-regular-expression

CPP-regex

regular-expression

How to validate Indian Passport number using Regular Expression

Last Updated: 13 August 2024

Given a string str of alphanumeric characters, the task is to check whether the given string is a valid passport number or not by using Regular Expression.A valid passport...read more

Strings

Pattern Searching

DSA

java-regular-expression

CPP-regex

regular-expression

How to validate MAC address using Regular Expression

Last Updated: 22 December 2022

Given string str, the task is to check whether the given string is a valid MAC address or not by using Regular Expression.A valid MAC address must satisfy the following co...read more

DSA

Computer Networks-IP Addressing

java-regular-expression

CPP-regex

regular-expression

How to validate GUID (Globally Unique Identifier) using Regular Expression

Last Updated: 19 December 2022

Given string str, the task is to check whether the given string is a valid GUID (Globally Unique Identifier) or not by using Regular Expression.The valid GUID (Globally Un...read more

Strings

Pattern Searching

DSA

java-regular-expression

CPP-regex

regular-expression

How to validate Indian driving license number using Regular Expression

Last Updated: 23 December 2022

Given string str, the task is to check whether the given string is a valid Indian driving license number or not by using Regular Expression.The valid Indian driving licens...read more

Strings

Pattern Searching

DSA

java-regular-expression

CPP-regex

regular-expression

How to find index of any Currency Symbols in a given string

Last Updated: 11 April 2023

Given a string txt, the task is to find the index of currency symbols present in the given string.Examples:Input: txt = "Currency symbol of USA is $";Output: 26Explanation...read more

java-regular-expression

CPP-regex

regular-expression

How to validate an IP address using ReGex

Last Updated: 15 February 2023

Given an IP address, the task is to validate this IP address with the help of Regex (Regular Expression) in C++ as a valid IPv4 address or IPv6 address. If the IP address ...read more

DSA

IP Addressing

python-regex

java-regular-expression

CPP-regex

regular-expression

Check if an URL is valid or not using Regular Expression

Last Updated: 07 December 2022

Given a URL as a character string str of size N.The task is to check if the given URL is valid or not.Examples :Input : str = "https://www.geeksforgeeks.org/"Output : YesE...read more

java-regular-expression

CPP-regex

Java-URL

regular-expression

Program to insert dashes between two adjacent odd digits in given Number

Last Updated: 27 January 2023

Given a large number in form of string N, the task is to insert a dash between two adjacent odd digits in the given number in form of strings.Examples:Input: N = 1745389Ou...read more

java-regular-expression

CPP-regex

regular-expression

Check if given email address is valid or not in C++

Last Updated: 26 October 2020

Given a string email that denotes an Email Address, the task is to check if the given string is a valid email id or not. If found to be true, then print "Valid". Otherwise...read more

Count occurrences of a word in string | Set 2 (Using Regular Expressions)

Last Updated: 15 February 2023

Given a string str and a word w, the task is to print the number of the occurrence of the given word in the string str using Regular Expression.Examples:Input: str = "pete...read more

DSA

CPP-regex

regular-expression

How to Replace Text in a String Using Regex in C++?

Last Updated: 08 February 2024

Regular expressions or what we can call regex for short are sequences of symbols and characters that create a search pattern and help us to find specific patterns within a...read more