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What is meant by physical size in a dynamic array?

(a) The size allocated to elements

(b) The size extended to add new elements

(c) The size of the underlying array at the back-end

(d) The size visible to users

The origin of the question is Dynamic Array in division Arrays Types of Data Structures & Algorithms I

The question was asked during an interview.

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The correct option is (c) The size of the underlying array at the back-end

Explanation: Physical size, also called array capacity is the size of the underlying array, which is the maximum size without relocation of data.

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