Loop over a vector
In the previous video, Filip told you about two different strategies for using the for loop. To refresh your memory, consider the following loops that are equivalent in R:
primes <- c(2, 3, 5, 7, 11, 13)
# loop version 1
for (p in primes) {
print(p)
}
# loop version 2
for (i in 1:length(primes)) {
print(primes[i])
}
Remember our linkedin vector? It's a vector that contains the number of views your LinkedIn profile had in the last seven days. The linkedin vector has been pre-defined so that you can fully focus on the instructions!
This exercise is part of the course
Intermediate R
Exercise instructions
Write a for loop that iterates over all the elements of linkedin and prints out every element separately. Do this in two ways: using the loop version 1 and the loop version 2 in the example code above.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# The linkedin vector has already been defined for you
linkedin <- c(16, 9, 13, 5, 2, 17, 14)
# Loop version 1
# Loop version 2