Collections Methods

Question 1

Sorting (Ascending Sorting , Low -> High)

Answer 1

Collections.sort(list);

Question 2

Reverse sorting (Descending Sorting , High -> Low)

Answer 2

Method 1 - Collections. sort (list,Collections.reverseOrder());
Method 2 - Collection.reverse(list);

Question 3

Randomly Order a List’s Elements

Answer 3

Collections.shuffle();

Question 4

Set every element of the list to a specified Object

Answer 4

Collections.fill(list,”Element”);

Question 5

Copy the content of one list to another

Answer 5

Collections.copy(CopyList,OriginalList);

Question 6

Find the Smallest Element in the list

Answer 6

Collections.min(list);

Question 7

Find the Largest Element in the list

Answer 7

Collections.max(list);

Question 8

Binary search of an element

Answer 8

Collections.binarySearch(List,key);

Question 9

Frequency of an element in a List

Answer 9

Collections.frequency (List,”Element”);

Question 10

Determine whether two list have any element common or not - Returns Boolean

Answer 10

Collections.disjoint(list1,list2);