Need of a loop
Let us consider a scenario where we want to print natural numbers from 1 to 3. We can simply print them one by one. But suppose the range is high, 1 to 100 or 1 to 10000 or even 1 to 100000, then printing them one by one is a tedious task. In such cases, loops are quite efficient and also improve the readability of the source code. In R, loops are broadly classified into three categories: for, while, and repeat. This article focuses upon the working of For-loop in R.
How to Create a Nested For Loop in R?
A loop in a programming language is a sequence of instructions executed one after the other unless a final condition is met. Using loops is quite frequent in a program.