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26 lines
721 B
26 lines
721 B
1 year ago
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use time::Date;
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use time::Month;
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use time::Duration;
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fn main() {
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let d_begin = Date::from_calendar_date(1901, Month::January, 1).unwrap();
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let d_end = Date::from_calendar_date(2000, Month::December, 31).unwrap();
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let dt = Duration::DAY;
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let mut day_count = 0u32;
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let mut sundays_count = 0u32;
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let mut di = d_begin.clone();
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while di != d_end {
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if di.weekday() == time::Weekday::Sunday {
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if di.day() == 1 {
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sundays_count += 1;
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}
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}
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//println!("{}", di.weekday());
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di = di.checked_add(dt).unwrap();
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day_count += 1;
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}
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println!("day_count: {}", day_count);
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println!("sundays count: {}", sundays_count);
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}
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