Question

How to convert seconds into weeks, days, hours, minutes, and seconds in Rust

Answer 1

/*
Use integer division and modulo:

1 minute = 60 seconds
1 hour   = 60 minutes
1 day    = 24 hours
1 week   = 7 days
*/

/*
    Convert a total number of seconds into weeks, days, hours,
    minutes, and seconds. The function receives the total seconds
    and returns each component in a struct.
*/
struct TimeParts {
    weeks:   i64,
    days:    i64,
    hours:   i64,
    minutes: i64,
    seconds: i64,
}

fn convert_seconds(mut total_seconds: i64) -> TimeParts {
    const SECS_PER_MIN:  i64 = 60;
    const SECS_PER_HOUR: i64 = 60 * SECS_PER_MIN;
    const SECS_PER_DAY:  i64 = 24 * SECS_PER_HOUR;
    const SECS_PER_WEEK: i64 = 7  * SECS_PER_DAY;

    // Compute each unit using integer division and modulo
    let weeks = total_seconds / SECS_PER_WEEK;
    total_seconds %= SECS_PER_WEEK;

    let days = total_seconds / SECS_PER_DAY;
    total_seconds %= SECS_PER_DAY;

    let hours = total_seconds / SECS_PER_HOUR;
    total_seconds %= SECS_PER_HOUR;

    let minutes = total_seconds / SECS_PER_MIN;
    let seconds = total_seconds % SECS_PER_MIN;

    TimeParts {
        weeks,
        days,
        hours,
        minutes,
        seconds,
    }
}

fn main() {
    let seconds: i64 = 1_000_000;

    let result = convert_seconds(seconds);

    println!(
        "{} weeks, {} days, {} hours, {} minutes, {} seconds",
        result.weeks, result.days, result.hours, result.minutes, result.seconds
    );
}



/*
run:

1 weeks, 4 days, 13 hours, 46 minutes, 40 seconds

*/

 

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