Module advent_of_code_2023::day_4

This is my solution for Advent of Code - Day 4: Scratchcards

Scratchcard handles parsing (Scratchcard::from), and scoring (Scratchcard::match_count and Scratchcard::score).

Part 1 is solved by sum_scores, part 2 by calculate_total_cards.

Structs

• Scratchcard 🔒
  Represents a scratchcard (one line of input)

Functions

• calculate_total_cards 🔒
  Part 2 solution - each card wins a copy of the next n cards where n is the number of winning matches. This is guaranteed not to overflow the list of available cards.
• parse_input 🔒
  Parse each line as a card
• run
  The entry point for running the solutions with the ‘real’ puzzle input.
• sum_scores 🔒
  Part 1 solution - calculate and sum the scores for all cards