Introduction

Conditional statements and repeated operations are some of the important aspects in any programming, whether it is in the data science area or for general programming purpose. Often, you will need to test several alternative statements. For example, if you are optimizing any mathematical function, the stopping rule depends on the conditional statement. Also, if you are solving any equation that needs iteration, you must use the repetition operator. The recipes of this chapter will give you a basic understanding of the use of conditional and repetitive statements in R. Each recipe contains certain context and code with explanation. You will feel confident in writing a conditional statement and using a loop in R after reading this chapter.