🛠️ C++ Utility Library (Header-only)

A lightweight, header-only C++ library (mylib.hpp) providing useful math and string utilities for competitive programming, projects, or everyday coding.

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⚡ Features

Math Utilities

• gcd(a, b) → Greatest Common Divisor
• lcm(a, b) → Least Common Multiple
• isPrime(n) → Check if a number is prime
• factors(n) → List all factors/divisors of a number
• nCr(n, r) → Compute combinations (n choose r)

String Utilities

• toLower(s) → Convert string to lowercase
• toUpper(s) → Convert string to uppercase
• split(s, delimiter) → Split string by a character
• join(vector<string>, delimiter) → Join strings with delimiter
• trim(s) → Remove leading and trailing whitespace
• reverseWords(s) → Reverse order of words in a string
• startsWith(s, prefix) → Check if string starts with a prefix
• endsWith(s, suffix) → Check if string ends with a suffix

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