Difference between collection and arrays

Write the difference between collection and arrays?

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a.) Array:

In this one need to give the size of the array during its declaration.
Array could not be adjusted dynamically.
The members of the array must be of the similar data type.

b.) Collection:

The size of the collection can be resized dynamically, according to the user's requirement.
Collection does not have permanent size.
It could have elements of dissimilar types.

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