R/euler_1.R

In nathaneastwood/euler: Solve Project Euler Problems

#' Project Euler 1: Multiples of 3 and 5
#'
#' This is a solution to
#' \href{https://projecteuler.net/problem=1}{Euler problem 1}.
#'
#' @param x Max value
#'
#' @examples
#' euler_1(1000)
#'
#' @export
euler_1 <- function(x) {
  vals <- 1:(x - 1)
  sum(vals[vals %% 3 == 0 | vals %% 5 == 0])
}