Arrays Utility Class

Question 1

Creates a fixed-size List out of the given array.

Answer 1

List asList(T…a)

Question 2

Searches for a key in the array. Returns an int value >= the index of the key if found. Otherwise returns a negative value. Overloads available for primitive types like int[] and byte[] and for a comparator object.

Answer 2

int binarySearch(objArray, key)

Question 3

Checks if the contents of array1 and array2 are equal. Overloads available for primitive types.

Answer 3

boolean equals(array1, array2)

Question 4

Fills the array with the value val. Overloads available for primitive types.

Answer 4

void fill(Array, val)

Question 5

Sorts the array based on natural order. Overloads available for primitives and a comparator object.

Answer 5

void sort(array)

Question 6

Returns the String representation of the given array.

Answer 6

String toString(array)