Author: ACMer
The Catalan number as described here is one of the well-known combinatorial number that has quite a few applications. For example, C(n) can be used to count the number …
SQL Left Outer Join can be illustrated by the following: where the query will take everything from left table and those fields from the right table. Let’s take a …
Given two strings A and B of lowercase letters, return true if and only if we can swap two letters in A so that the result equals B. Example …
Having the right set of plugins can make your online business grow to the next level. The majority of the developed plugins are free but most of them have …
The world of business is moving so fast that it is almost impossible to do business without a phone service. In fact, not having a telephone number on your …
