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MCQ

Two dimensional arrays are also called

tables arrays

matrix arrays

both of above

none of above

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What is the difference between a normal(naive) array and a sparse array?

Sparse array can hold more elements than a normal array

Sparse array is memory efficient

Sparse array is dynamic

A naive array is more efficient

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Which of these best describes an array?

A data structure that shows a hierarchical behavior

Container of objects of similar types

Container of objects of mixed types

All of the mentioned

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What is right way to Initialize array?

int num[6] = { 2, 4, 12, 5, 45, 5 };

int n{} = { 2, 4, 12, 5, 45, 5 };

int n{6} = { 2, 4, 12 };

int n(6) = { 2, 4, 12, 5, 45, 5 };

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A double sub-scripted array declared as int a[ 3 ][ 5 ]; has how many elements?

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What is the output of the following piece of code?

public class array
{
 public static void main(String args[])
 {
  int []arr = {1,2,3,4,5};
  System.out.println(arr[2]);
  System.out.println(arr[4]);
 }
}

3 and 5

5 and 3

2 and 4

4 and 2

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Data Structure Basics

Abstract data types

Arrays

Lists

Stacks

Queues

Trees

Binary Trees

B Trees

Heaps

Hash based structures

Graphs

Mixed

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