Intro
Day 1 of AOC 2023
library(aocr)
library(tidyverse)
library(printr)
d_init <- aoc_get_data_as_tibble(2023, 1)
Part 1
| five3onelxjninenine45 |
| six9mnfjmtsf2kfmznkxntninesevenrpmfjfpgsk |
| 9vkrmbpnine5two5cbktwo6 |
| one1bdr6 |
| ksvctznmffourtwovbb9four5five |
| 6nfhcklxlkg9jbqmqrrxmhn9two6 |
Use regex to extract the first and last digit.
d <-
d_init |>
mutate(
first_digit = gsub("\\D*(\\d).*", "\\1", col_1),
last_digit = gsub(".*?(\\d)\\D*$", "\\1", col_1),
combo = as.numeric(paste0(first_digit, last_digit))
)
head(d)
| five3onelxjninenine45 |
3 |
5 |
35 |
| six9mnfjmtsf2kfmznkxntninesevenrpmfjfpgsk |
9 |
2 |
92 |
| 9vkrmbpnine5two5cbktwo6 |
9 |
6 |
96 |
| one1bdr6 |
1 |
6 |
16 |
| ksvctznmffourtwovbb9four5five |
9 |
5 |
95 |
| 6nfhcklxlkg9jbqmqrrxmhn9two6 |
6 |
6 |
66 |
Part 2
Had to get help from twitter on this one :)
num <- c("one", "two", "three", "four", "five", "six", "seven", "eight", "nine")
d2 <-
d_init |>
extract(
col = col_1,
into = "first_init",
regex = "(\\d|one|two|three|four|five|six|seven|eight|nine)",
remove = FALSE
) |>
extract(
col = col_1,
into = "last_init",
regex = ".*(\\d|one|two|three|four|five|six|seven|eight|nine)",
remove = FALSE
) |>
mutate(
first = coalesce(
as.numeric(first_init),
match(first_init, num)
),
last = coalesce(
as.numeric(last_init),
match(last_init, num)
),
combo = as.numeric(paste0(first, last))
) %>%
select(
col_1,
first_init,
last_init,
first,
last,
combo
)
head(d2)
| five3onelxjninenine45 |
five |
5 |
5 |
5 |
55 |
| six9mnfjmtsf2kfmznkxntninesevenrpmfjfpgsk |
six |
seven |
6 |
7 |
67 |
| 9vkrmbpnine5two5cbktwo6 |
9 |
6 |
9 |
6 |
96 |
| one1bdr6 |
one |
6 |
1 |
6 |
16 |
| ksvctznmffourtwovbb9four5five |
four |
five |
4 |
5 |
45 |
| 6nfhcklxlkg9jbqmqrrxmhn9two6 |
6 |
6 |
6 |
6 |
66 |
Session info
Click for session info
─ Session info ───────────────────────────────────────────────────────────────
setting value
version R version 4.3.1 (2023-06-16 ucrt)
os Windows 10 x64 (build 19045)
system x86_64, mingw32
ui RTerm
language (EN)
collate English_United States.utf8
ctype English_United States.utf8
tz America/Chicago
date 2023-12-17
pandoc 3.1.1 @ C:/Program Files/RStudio/resources/app/bin/quarto/bin/tools/ (via rmarkdown)
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[1] C:/Users/kypap/Documents/projects/quarto-site/renv/library/R-4.3/x86_64-w64-mingw32
[2] C:/Users/kypap/AppData/Local/R/cache/R/renv/sandbox/R-4.3/x86_64-w64-mingw32/bd3f13aa
P ── Loaded and on-disk path mismatch.
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