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Interface structure.Set

public interface Set
extends Collection
Implementation of a set of elements. As with the mathematical object, the elements of the set are not duplicated. No order is implied or enforced in this structure.

Method Index

o difference(Set)
Compute the difference between two sets.
o intersection(Set)
Compute the intersection of this set and other.
o subset(Set)
Determine if this set is a subset of other.
o union(Set)
Compute the union of this set with other.

Methods

o subset 
public abstract boolean subset(Set other)
Determine if this set is a subset of other.

Precondition:
other is non-null reference to set
Postcondition:
returns true iff this set is subset of other

Parameters:
other - The potential superset.
o union 
public abstract Object union(Set other)
Compute the union of this set with other. This set not modified.

Precondition:
other is non-null reference to set
Postcondition:
returns new set containing union of this and other

Parameters:
other - The set to be unioned with this.
Returns:
Union of this and other.
o intersection 
public abstract Object intersection(Set other)
Compute the intersection of this set and other. Members of result are in both this and other.

Precondition:
other is non-null reference to set
Postcondition:
returns new set containing intersection of this and other

Parameters:
other - The other set to be intersected with this.
Returns:
Intersection of this and other.
o difference 
public abstract Object difference(Set other)
Compute the difference between two sets. Values of the result are members of this, but not other.
Precondition:
other is non-null reference to set
Postcondition:
returns new set containing difference of this and other

Parameters:
other - The set whose values are to be eliminated from this.
Returns:
Difference between this and other.
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