Data Structure · all questions

Arrays in Data Structures
practice.

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176

Questions

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Q41

Which of the following data structures is best suited for implementing an array list in Java?

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Q42

How do you find the maximum element in an array in Python?

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Q43

What happens when you access an array element out of bounds in C++?

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Q44

How do you copy an array in C++?

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Q45

Which of the following is a correct way to declare a constant array in JavaScript?

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Q46

Which matrix has most of the elements (not all) as Zero?

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Q47

It is not possible to find the minimum number of steps to reach the end of an array in linear time.

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Q48

What is the time complexity of the following code that determines the number of inversions in an array?

int InvCount(int arr[], int n) 
{ 
	int count = 0; 
	for (int i = 0; i < n - 1; i++) 
		for (int j = i + 1; j < n; j++) 
			if (arr[i] > arr[j]) 
				count++; 
 
	return count; 
}

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Q49

If column-major order is used, how is the following matrix stored in memory?
a b c
d e f
g h i

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Q50

What is the time complexity of the juggling algorithm to rotate an array?

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Q51

What will be the suffix array of the string "engineering"?

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Q52

Where does the GNU C compiler allocates memory for variable-length arrays?

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Q53

Which of the following is not an application of sorted array?

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Q54

What is a bit array?

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Q55

Which of the following bitwise operations will you use to set a particular bit to 1?

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Q56

What are parallel arrays?

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Q57

Which of the following is an advantage of parallel arrays?

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Q58

Which of the following is an advantage of matrices?

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Q59

What will be the output of the following code?

#include <bits/stdc++.h> 
using namespace std; 
 
void func1(int arr[], int n) 
{ 
	int k = arr[0], i; 
	for (i = 0; i < n - 1; i++) 
		arr[i] = arr[i + 1]; 
 
	arr[i] = k; 
} 
 
void func(int arr[], int d, int n) 
{ 
	for (int i = 0; i < d; i++) 
		func1(arr, n); 
} 
 
void printArray(int arr[], int n) 
{ 
	for (int i = 0; i < n; i++) 
		cout << arr[i] << " "; 
} 
 
int main() 
{ 
	int arr[] = { 1, 2, 3, 4, 5}; 
	int n = sizeof(arr) / sizeof(arr[0]); 
 
 
	func(arr, 3, n); 
	printArray(arr, n); 
 
	return 0; 
}

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Q60

Which of the following is not a disadvantage of bit array?

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