\[x = c(1, 2, 3, 4, 5)\]
\[df = data.frame(name = c("John", "Mary"), age = c(25, 31))\] r data structures and algorithms pdf
\[my_list = list(a = 1, b = 2, c = c(3, 4, 5))\] \[x = c(1, 2, 3, 4, 5)\] \[df = data