regular-expression

Technical Scripter

US currency validation using Regular Expressions

Last Updated: 16 December 2022

Given some US Currencies, the task is to check if they are valid or not using regular expressions. Rules for the valid Currency are:It shoul ...read more

Technical Scripter

Validating Voter ID Card using Regular Expression

Last Updated: 15 December 2022

Voter ID card is also known as EPIC (Electors Photo Identity Card). EPIC is an identification proof for Indian citizens over the age of 18.G ...read more

Technical Scripter

Validating UPI IDs using Regular Expressions

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Last Updated: 14 December 2022

Given some UPI IDs, the task is to check if they are valid or not using regular expressions. Rules for the valid UPI ID:UPI ID is an alphanu ...read more

Python Program for Remove leading zeros from a Number given as a string

Last Updated: 18 August 2023

Given numeric string str, the task is to remove all the leading zeros from a given string. If the string contains only zeros, then print a s ...read more

Validating Indian vehicle number plate using Regular Expression

Last Updated: 06 July 2023

Given a string str, the task is to validate if this string represents an Indian vehicle number.A Number Plate consists of three parts : Wh...read more

Why do we need Prefix and Postfix notations?

Last Updated: 01 July 2022

Prefix Notation:Prefix notation is the notation in which operators are placed before the corresponding operands in the expression.Example:In ...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 Express...read more

How to convert a string into kebab case using JavaScript ?

Last Updated: 29 December 2023

Given a string with space-separated or camel case or snake case letters, the task is to find the kebab case of the following string.Examples ...read more

Check if a given pattern exists in a given string or not including wild cards * and .

Last Updated: 18 April 2023

Given two strings text and pattern of length M and N respectively, The task is to check if the pattern matches the text or not. If found to ...read more

Technical Scripter 2020

Extract URLs present in a given string

Last Updated: 07 November 2023

Given a string S, the task is to find and extract all the URLs from the string. If no URL is present in the string, then print "-1".Examples ...read more

Technical Scripter 2020

∈-NFA of Regular Language L = {ab,ba}

Last Updated: 11 November 2020

Prerequisite - Introduction of Finite AutomataNon-Deterministic Finite Automata and ∈-Non-Deterministic Finite Automata are almost the sam...read more

GATE CS

Theory of Computation

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 string ...read more

java-regular-expression

CPP-regex

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 ...read more

Strings

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java-regular-expression

CPP-regex

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 M ...read more

Strings