17: Improve solution for Rust track exercise "Nth Prime".

Dependencies

• [2] UTP7D53Q 12: Improve solution for Rust track exercise "Nth Prime".
• [3] ERYD4CD7 11: Add solution for Rust track exercise "Nth Prime".
• [*] JZN2AQ3E 10: Add Rust track exercise "nth-prime".

Change contents

• replacement in rust/nth-prime/src/lib.rs at line 30
  [3.1399]→[3.1399:1520](∅→∅)
  − if index < limit {

  − for multiple in (index * index..list_size).step_by(index) {

  − list[multiple] = false;

  − }
  [3.1399]

  [2.26]
  + for multiple in (index * index..list_size).step_by(index) {

  + list[multiple] = false;