20.7 Collections Methods
Class Collections
provides several high-performance algorithms for manipulating collection elements. The algorithms (Fig. 20.5) are implemented as static
methods. The methods sort
, binarySearch
, reverse
, shuffle
, fill
and copy
operate on List
s. Methods min
, max
, addAll
, frequency
and disjoint
operate on Collection
s.
Fig. 20.5 Collections
methods.
Method | Description |
---|---|
sort |
Sorts the elements of a List . |
binarySearch |
Locates an object in a List . |
reverse |
Reverses the elements of a List . |
shuffle |
Randomly orders a List ’s elements. |
fill |
Sets every List element to refer to a specified object. |
copy |
Copies references from one List into another. |
min |
Returns the smallest element in a Collection . |
max |
Returns ... |
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