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MCQ

Matrix A when multiplied with Matrix C gives the Identity matrix I, what is C?

Identity matrix

Inverse of A

Square of A

Transpose of A

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MCQ

Which of the following is the correct syntax to declare an ArrayList in Java?

ArrayList al = new ArrayList();

ArrayList al = new ArrayList[];

ArrayList al() = new ArrayList();

ArrayList al[] = new ArrayList[];

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MCQ

What is it that the compiler needs to know about an array that it needs to know about an ordinary variable known as a scalar variable in the trade?

Type

Storage class

Both (a) and (b)

None of the above

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What is a sparse array?

Data structure for representing arrays of records

Data structure that compactly stores bits

An array in which most of the elements have the same value

None of the mentioned

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What is a bit array?

Data structure for representing arrays of records

Data structure that compactly stores bits

An array in which most of the elements have the same value

None of the mentioned

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MCQ

What is meant by physical size in a dynamic array?

The size allocated to elements

The size extended to add new elements

The size of the underlying array at the back-end

The size visible to users

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