26: Refactor solution for Rust track exercise "Sum Of Multiples".

Dependencies

• [2] S746FJJE 25: Refactor solution for Rust track exercise "Sum Of Multiples".
• [3] QK6XE5XF 13: Add Rust track exercises "Beer Song", "Proverb", "Difference Of Squares", "Sum Of Multiples", "Grains", "Prime Factors", "Armstrong Numbers" and "Reverse String".
• [4] SPUEEQZQ 24: Add WIP solution for Rust track exercise "Sum Of Multiples".

Change contents

• replacement in rust/sum-of-multiples/src/lib.rs at line 238
  [3.5724]→[3.5724:5792](∅→∅),[3.5792]→[2.0:233](∅→∅)
  − |accumulator_a, subset_size| -> Result<u32, CreationError<u32>> {

  − let sum = CombinationsWithoutReplacement::new(factors, subset_size)?.fold(

  − 0,

  − |accumulator_b, combination| {

  − accumulator_b

  − + UnsignedMultiples::new(combination.iter().product(), limit).sum::<u32>()

  − },

  − );
  [3.5724]

  [3.5792]
  + |accumulator, subset_size| -> Result<u32, CreationError<u32>> {

  + let sum: u32 = CombinationsWithoutReplacement::new(factors, subset_size)?

  + .map(|combination| {

  + UnsignedMultiples::new(combination.iter().product(), limit).sum::<u32>()

  + })

  + .sum();
• replacement in rust/sum-of-multiples/src/lib.rs at line 245
  [3.5824]→[2.234:258](∅→∅)
  − accumulator_a + sum
  [3.5824]

  [3.6090]
  + accumulator + sum
• replacement in rust/sum-of-multiples/src/lib.rs at line 247
  [3.6102]→[2.259:283](∅→∅)
  − accumulator_a - sum
  [3.6102]

  [3.6368]
  + accumulator - sum