R For Loop

Used to iterate a block of code for a specific number of times.
for (variable in sequence) {
# Code to be executed in each iteration
  1. variable - The values in the variable takes on a specified sequence during each iteration.
  2. sequence - Declares a sequence that can be a vector, list, or other iterable data structures.


for (i in 1:5) {
  print(paste("Iteration:", i))

THe above example used a sequence 1:5 which means it iterates the variable i from 1 to 5
during each iteration it executes the block of code in the for loop.

Nested For Loop

In R For loop inside a For loop i.e; Nested for loop can be used


for (i in 1:3) {
  for (j in 1:2) {
    print(paste("Iteration:", i, "-", j))

Using break and next

Used to alter the proper flow of execution in the loops and also in conditional statements.
  1. break: exits the loop permenently
  2. next: skips the execution of the loop for current iteration and moves to next iteration.


for (i in 1:10) {
  if (i == 5) {
    break  # exit the loop when i is 5
  if (i %% 2 == 0) {
    next  # skip even numbers

Quick Recap - Topics Covered

R For Loop
R Nested Loop
Using break and next statements

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