@FunctionalInterface public interface LongComparator extends Comparator<Long>
Comparator; provides methods to compare two primitive types both as objects and as primitive types.
fastutil provides a corresponding abstract class that can
be used to implement this interface just by specifying the type-specific
|Modifier and Type||Method and Description|
Compares its two primitive-type arguments for order.
Please use the corresponding type-specific method instead.
int compare(long k1, long k2)
@Deprecated default int compare(Long ok1, Long ok2)
In the foregoing description, the notation sgn(expression) designates the mathematical signum function, which is defined to return one of -1, 0, or 1 according to whether the value of expression is negative, zero or positive.
The implementor must ensure that sgn(compare(x, y)) == -sgn(compare(y, x)) for all x and y. (This implies that compare(x, y) must throw an exception if and only if compare(y, x) throws an exception.)
The implementor must also ensure that the relation is transitive: ((compare(x, y)>0) && (compare(y, z)>0)) implies compare(x, z)>0.
Finally, the implementor must ensure that compare(x, y)==0 implies that sgn(compare(x, z))==sgn(compare(y, z)) for all z.
It is generally the case, but not strictly required that (compare(x, y)==0) == (x.equals(y)). Generally speaking, any comparator that violates this condition should clearly indicate this fact. The recommended language is "Note: this comparator imposes orderings that are inconsistent with equals."
This implementation delegates to the corresponding type-specific method.