這是一些讓你開始的東西。你可能會想一想到底是要包容性還是排他性,等等。

import org.joda.time.*;

import java.util.*;

class LocalDateRange implements Iterable

{

private final LocalDate start;

private final LocalDate end;

public LocalDateRange(LocalDate start,

LocalDate end)

{

this.start = start;

this.end = end;

}

public Iterator iterator()

{

return new LocalDateRangeIterator(start, end);

}

private static class LocalDateRangeIterator implements Iterator

{

private LocalDate current;

private final LocalDate end;

private LocalDateRangeIterator(LocalDate start,

LocalDate end)

{

this.current = start;

this.end = end;

}

public boolean hasNext()

{

return current != null;

}

public LocalDate next()

{

if (current == null)

{

throw new NoSuchElementException();

}

LocalDate ret = current;

current = current.plusDays(1);

if (current.compareTo(end) > 0)

{

current = null;

}

return ret;

}

public void remove()

{

throw new UnsupportedOperationException();

}

}

}

class Test

{

public static void main(String args[])

{

LocalDate start = new LocalDate(2009, 7, 20);

LocalDate end = new LocalDate(2009, 8, 3);

for (LocalDate date : new LocalDateRange(start, end))

{

System.out.println(date);

}

}

}

我已經(jīng)用Java編寫了一個迭代器了,所以我

希望

這是對的。我覺得很好…

哦,對于C迭代器塊,我只能說……

總結

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