Datasets:
Tasks:
Text Generation
Modalities:
Text
Formats:
json
Languages:
English
Size:
< 1K
ArXiv:
Tags:
competitive-programming
code-generation
specification-generation
proof-generation
verification
rust
License:
| use vstd::prelude::*; | |
| fn main() {} | |
| verus! { | |
| pub struct Solution; | |
| pub open spec fn hour12_spec(h24: int) -> int | |
| recommends 0 <= h24 <= 23, | |
| { | |
| if h24 == 0 { | |
| 12 | |
| } else if h24 <= 11 { | |
| h24 | |
| } else if h24 == 12 { | |
| 12 | |
| } else { | |
| h24 - 12 | |
| } | |
| } | |
| impl Solution { | |
| pub fn convert_hour(h24: u8) -> (result: (u8, bool)) | |
| requires | |
| h24 <= 23, | |
| ensures | |
| 1 <= result.0 <= 12, | |
| result.1 == (h24 >= 12), | |
| (h24 == 0 ==> result.0 == 12), | |
| (1 <= h24 <= 11 ==> result.0 == h24), | |
| (h24 == 12 ==> result.0 == 12), | |
| (13 <= h24 <= 23 ==> result.0 == h24 - 12), | |
| { | |
| if h24 == 0 { | |
| (12, false) | |
| } else if h24 < 12 { | |
| (h24, false) | |
| } else if h24 == 12 { | |
| (12, true) | |
| } else { | |
| (h24 - 12, true) | |
| } | |
| } | |
| pub fn convert_time(h24: u8, minute: u8) -> (result: Vec<u8>) | |
| requires | |
| h24 <= 23, | |
| minute <= 59, | |
| ensures | |
| result.len() == 8, | |
| result[0] as int == 48 + hour12_spec(h24 as int) / 10, | |
| result[1] as int == 48 + hour12_spec(h24 as int) % 10, | |
| result[2] == 58u8, | |
| result[3] as int == 48 + (minute as int) / 10, | |
| result[4] as int == 48 + (minute as int) % 10, | |
| result[5] == 32u8, | |
| result[6] == if h24 >= 12 { 80u8 } else { 65u8 }, | |
| result[7] == 77u8, | |
| { | |
| let (h12, is_pm) = Self::convert_hour(h24); | |
| let mut out = Vec::new(); | |
| out.push(48u8 + h12 / 10); | |
| out.push(48u8 + h12 % 10); | |
| out.push(58u8); | |
| out.push(48u8 + minute / 10); | |
| out.push(48u8 + minute % 10); | |
| out.push(32u8); | |
| out.push(if is_pm { 80u8 } else { 65u8 }); | |
| out.push(77u8); | |
| out | |
| } | |
| } | |
| } | |