Pattern Searching

401+ posts

Validate week days using Regular Expression

Last Updated: 23 July 2025

Given some Weekdays, the task is to check if they are valid or not using regular expressions.Rules for the valid Weekdays :It should contain specific only words as a strin...read more

Pattern Searching

Technical Scripter

Technical Scripter 2022

DSA

regular-expression

Validate Corporate Identification Number (CIN) using Regular Expression

Last Updated: 23 July 2025

Given some Corporate Identification Number, the task is to check if they are valid or not using regular expressions. Rules for the valid CIN are:CIN is a 21 digits alpha-n...read more

Pattern Searching

Technical Scripter

Technical Scripter 2022

DSA

regular-expression

Match flight number using Regular Expression

Last Updated: 23 July 2025

Given some Flight Numbers, the task is to check if they are valid or not using regular expressions. Rules for the valid flight numbers are:It is an alphanumeric string con...read more

Pattern Searching

Technical Scripter

Technical Scripter 2022

DSA

regular-expression

Validate GIT Repository using Regular Expression

Last Updated: 23 July 2025

GIT stands for GLOBAL INFORMATION TRACKER.Given some Git repositories, the task is to check if they are valid or not using regular expressions. Rules for the valid Git Rep...read more

Pattern Searching

Technical Scripter

Technical Scripter 2022

DSA

regular-expression

Validating traditional time formats using Regular Expression

Last Updated: 23 July 2025

Given a string Time Format, the task is to check whether the string follows thetime formats "HH: MM: SS" or "HH: MM" using Regular Expression. Rules for valid time formats...read more

Pattern Searching

Technical Scripter

Technical Scripter 2022

DSA

regular-expression

Validate LEI(Legal Entity Identifier) using Regular Expression

Last Updated: 23 July 2025

Given some Legal Entity Identifier, the task is to check whether they are valid using regular expressions. Rules for the valid LEI are:LEI code length is comprised of a 20...read more

Pattern Searching

Technical Scripter

Technical Scripter 2022

DSA

regular-expression

Validating Programming File formats using Regular Expressions

Last Updated: 23 July 2025

Given some programming file names, the task is to check if they are valid or not using regular expressions. A valid programming file name follows the below conditions:It c...read more

Pattern Searching

Technical Scripter

Technical Scripter 2022

DSA

regular-expression

Validate localhost API request processed by POSTMAN using Regular Expression

Last Updated: 23 July 2025

Given some Postman APIs, the task is to check if they are valid or not using regular expressions.Rules for the valid API:It is an alphanumeric String, a combination of alp...read more

Pattern Searching

Technical Scripter

Technical Scripter 2022

DSA

regular-expression

Validating Voter ID Card using Regular Expression

Last Updated: 23 July 2025

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.Given some Voter ids, the task i...read more

Pattern Searching

Technical Scripter

Technical Scripter 2022

DSA

regular-expression

Validate Phone Numbers ( with Country Code extension) using Regular Expression

Last Updated: 23 July 2025

Given some Phone Numbers, the task is to check if they are valid or not using regular expressions. Rules for the valid phone numbers are:The numbers should start with a pl...read more

Pattern Searching

Technical Scripter

Technical Scripter 2022

DSA

regular-expression

Validate Gender using Regular Expressions

Last Updated: 23 July 2025

Given some words of Gender, the task is to check if they are valid or not using regular expressions. The correct responses can be as given below:Male / male / MALE / M / m...read more

Pattern Searching

Technical Scripter

Technical Scripter 2022

DSA

regular-expression

How to validate ISIN using Regular Expressions

Last Updated: 23 July 2025

ISIN stands for International Securities Identification Number.Given string str, the task is to check whether the given string is a valid ISIN(International Securities Ide...read more

Strings

Pattern Searching

Technical Scripter

Technical Scripter 2022

DSA

regular-expression

Validating UPI IDs using Regular Expressions

Last Updated: 23 July 2025

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 alphanumeric String i.e., formed using...read more

Strings

Pattern Searching

Technical Scripter

Technical Scripter 2022

DSA

regular-expression

Count of Strings of Array having given prefixes for Q query

Last Updated: 23 July 2025

Given two arrays of strings containing words[] and queries[] having N and Q strings respectively, the task is to find the number of strings from words[] having queries[i] ...read more

Technical Scripter 2022

DSA

Trie

prefix

Introduction to Pattern Searching - Data Structure and Algorithm Tutorial

Last Updated: 23 July 2025

Pattern searching is an algorithm that involves searching for patterns such as strings, words, images, etc.We use certain algorithms to do the search process. The complexi...read more

Pattern Searching

DSA

DSA Tutorials

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