Algorithm to Count the Minimum Add to Make Parentheses Valid
Given a string S of ‘(‘ and ‘)’ parentheses, we add the minimum number of parentheses ( ‘(‘ or ‘)’, and in any positions ) so that the resulting …
WXT pre-sale is now live – is it worth it?
According to here, you can now buy WXT if your are registered with Wirex (Free Registeration). The WXT (from WirexApp) is distributed on a first-come-first-serve basis at a fixed …
How to Serialize and Deserialize Binary Tree?
Serialization is the process of converting a data structure or object into a sequence of bits so that it can be stored in a file or memory buffer, or …
How to Construct Binary Tree from String (Binary Tree Deserialization Algorithm)
You need to construct a binary tree from a string consisting of parenthesis and integers. The whole input represents a binary tree. It contains an integer followed by zero, …
How to For-Loop and do Math/Arithmetic Operations in Windows/NT Batch – the FizzBuzz Programming Example
The FizzBuzz is a good example to start learning a programming language – which contains the exercise of using a loop (either for-loop or a while-loop), Arithmetic operations (modulus), …
How to Find the Closest Sum of Three in an Array using Two Pointer Algorithm? (3Sum Closest)
Given an array nums of n integers and an integer target, find three integers in nums such that the sum is closest to target. Return the sum of the …