Interview Questions

1. Two Sum

   coding

   Title:

   Two Sum

   Problem:

   Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target.

2. Valid Parentheses

   coding

   Title:

   Valid Parentheses

   Problem:

   Given a string containing parentheses and letters, determine if the parentheses are valid (every opening bracket has a matching closing bracket in the correct order).