The objective of this worksheet is to enhance knowledge of the apply family functions.

Learn basics of `stringr` library in R

This R Markdown document provides an implementation of portfolio optimization using the HM (Harry Markowitz) model. The HM model is a widely used framework for constructing efficient portfolios based on mean-variance analysis. It can be applied for N number of securities.

Learn string manipulation using `stringr` library. I focus on learning regex in this article.