Collections Utility Class

Question 1

Looks for the key in List. If found, returns a value >= 0; otherwise returns a negative value. It has an overloaded version that also takes a comparator object.

Answer 1

int binarySearch(List, key)

Question 2

Copies all elements from src List to dst List.

Answer 2

void copy(dest, src)

Question 3

Fills the whole List with the value obj.

Answer 3

void fill(List, obj)

Question 4

Returns the max element in the list. Has an overloaded version that takes a comparator.

Answer 4

T max(Collection)

Question 5

Returns the min element in the list. Has an overloaded version that takes a comparator.

Answer 5

T min(Collection)

Question 6

Replaces all occurences of oldVal with newVal in the list.

Answer 6

boolean replaceAll(List, oldVal, newVal)

Question 7

Reverses all the elements in the given list.

Answer 7

void reverse(List)

Question 8

Rotates the list given by the value distance.

Answer 8

void rotate(List, int distance)

Question 9

Shuffles the elements in the list randomly.

Answer 9

void shuffle(List)

Question 10

Sorts the list in its natural order. Has an overloaded version that also takes a comparator object.

Answer 10

void sort(List)

Question 11

Swaps the elements in the positions i and j in the list.

Answer 11

void swap(List, int i, int j)