[Java] Array

Array

Array is a group of same kind of variables and can be accessible by a common name

1. How to convert Array to List in java

Utility method Arrays.asList() helps us to convert an Array of objects to List of objects

2. BinarySearch

Arrays.binarySearch() helps us to find an object from an array of objects by using binary search algo

3. Copy array and increase size dynamically

Arrays.copyOf() helps us to create new array with new size and copy old arrays content to the new array at the same time

4. Copy range of elements from an array

Arrays.copyOfRange() helps us to copy range of object from existing array to new array

5. Compare two arrays and confirm they are equal

Arrays.deepEquals() helps us to compare two arrays

Arrays.deepEquals() can compare only object(not int)

6. Fill an Array with default 

Arrays.fill() helps us to fill an empty array with default values

7. Sort an array

Arrays.sort() helps us to sort an array of object

8. Sort an array using comparator

Arrays.sort() helps us to sort an array of objects by passing Comparator object,where Comparator holds the sorting logic