Rust Solution!
Used a regex to find groups of 3 digits. Then checked if the digits were the same. If they were we check the second number for the digit twice, again using a regex!
#[macro_use] extern crate lazy_static; pub fn triple_double(num1: u64, num2: u64) -> bool { use regex::Regex; lazy_static! { static ref first_num_regex: Regex = Regex::new(r"(\d{3})").unwrap(); } let string1 = num1.to_string(); let string2 = num2.to_string(); for i in first_num_regex.captures_iter(&string1) { let regex_match = i.get(0).unwrap().as_str(); if regex_match[0..1] == regex_match[1..2] && regex_match[1..2] == regex_match[2..3] { let second_layer_regex = Regex::new(®ex_match[0..2]).unwrap(); if second_layer_regex.is_match(&string2) { return true; } } } false } #[cfg(test)] mod tests { use crate::*; #[test] fn it_for_true_examples() { assert_eq!(triple_double(451999277, 41177722899), true); assert_eq!(triple_double(666789, 12345667), true); } #[test] fn it_for_false_examples() { assert_eq!(triple_double(1222345, 12345), false); assert_eq!(triple_double(12345, 12345), false); } }
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Rust Solution!
Used a regex to find groups of 3 digits. Then checked if the digits were the same. If they were we check the second number for the digit twice, again using a regex!