Numbers
Data Types
Integers
Algorithms
Logic
// Removed loop fn digits (n: u64) -> usize { n.to_string().len() }- // Removed loop
- fn digits (n: u64) -> usize
- {
match n {0 ..= 9 => 1,10 ..= 99 => 2,100 ..= 999 => 3,1000 ..= 9999 => 4,10000 ..= 99999 => 5,100000 ..= 999999 => 6,1000000 ..= 9999999 => 7,10000000 ..= 99999999 => 8,100000000 ..= 999999999 => 9,1000000000 ..= 9999999999 => 10,10000000000 ..= 99999999999 => 11,100000000000 ..= 999999999999 => 12,1000000000000 ..= 9999999999999 => 13,10000000000000 ..= 99999999999999 => 14,100000000000000 ..= 999999999999999 => 15,1000000000000000 ..= 9999999999999999 => 16,10000000000000000 ..= 99999999999999999 => 17,100000000000000000 ..= 999999999999999999 => 18,1000000000000000000 ..= 9999999999999999999 => 19,_ => 20,}- n.to_string().len()
- }