Creating Vectors

Vectors

Vectors are the most fundamental data structure in R. A vector is an ordered collection of elements of the same type.

Creating Vectors with c()

The c() function combines values into a vector:

nums <- c(1, 2, 3, 4, 5)
names <- c("Alice", "Bob", "Charlie")
flags <- c(TRUE, FALSE, TRUE)

Sequences

Use the : operator for integer sequences:

x <- 1:5   # c(1, 2, 3, 4, 5)
y <- 3:7   # c(3, 4, 5, 6, 7)

Use seq() for more control:

seq(1, 10, by = 2)       # c(1, 3, 5, 7, 9)
seq(0, 1, length.out = 5) # c(0.00, 0.25, 0.50, 0.75, 1.00)

Repetition

Use rep() to repeat values:

rep(0, 5)          # c(0, 0, 0, 0, 0)
rep(c(1, 2), 3)    # c(1, 2, 1, 2, 1, 2)
rep(c(1, 2), each = 3) # c(1, 1, 1, 2, 2, 2)

Printing Vectors

Use cat() with vectors -- it prints elements separated by spaces:

x <- c(10, 20, 30)
cat(x, "\n")  # 10 20 30

Your Task

Create a vector containing the even numbers from 2 to 10, and print it.