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Data Structures and Algorithms

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Data Structures and Algorithms
6 followers study24x7 29 Dec 2025 04:41 PM study24x7 study24x7

What is the maximum number of children for any node in a binary tree?

A

1

B

2

C

3

D

Depends on height

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Data Structures and Algorithms
6 followers study24x7 29 Dec 2025 04:40 PM study24x7 study24x7

Which of the following sorting algorithms is comparison-based?

A

Counting Sort

B

Radix Sort

C

Bucket Sort

D

Heap Sort

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Data Structures and Algorithms
6 followers study24x7 29 Dec 2025 04:37 PM study24x7 study24x7

Which tree structure keeps keys in sorted order and allows multiple keys per node?

A

AVL Tree

B

Binary Search Tree

C

B-Tree

D

Heap

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Data Structures and Algorithms
6 followers study24x7 26 Dec 2025 01:18 PM study24x7 study24x7

BFS uses which data structure?

A

Stack

B

Queue

C

Hash table

D

Heap

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  • Avinash Prakash
    • 8448169645
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    Reply 27 Dec 2025 10:43 AM

    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
    Data Structures and Algorithms
    6 followers study24x7 26 Dec 2025 01:17 PM study24x7 study24x7

    Time complexity of inserting a node at the beginning of a linked list:

    A

    O(n)

    B

    O(log n)

    C

    O(1)

    D

    O(n log n)

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    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
    Data Structures and Algorithms
    6 followers study24x7 26 Dec 2025 01:15 PM study24x7 study24x7

    Binary search works only on:

    A

    Unsorted arrays

    B

    Sorted arrays

    C

    Linked lists

    D

    Trees

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    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
    Data Structures and Algorithms
    6 followers study24x7 24 Dec 2025 03:56 PM study24x7 study24x7

    Which algorithm uses backtracking?

    A

    Merge sort

    B

    Quick sort

    C

    Tower of Hanoi

    D

    N-Queens problem

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    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
    Data Structures and Algorithms
    6 followers study24x7 24 Dec 2025 03:56 PM study24x7 study24x7

    The number of edges in a complete graph with n nodes is:

    A

    n

    B

    n²

    C

    n(n−1)/2

    D

    2n

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    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
    Data Structures and Algorithms
    6 followers study24x7 24 Dec 2025 03:55 PM study24x7 study24x7

    In graph algorithms, Dijkstra’s algorithm fails when:

    A

    Graph is directed

    B

    Graph has cycles

    C

    Negative edge weights

    D

    Graph is disconnected

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    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
    Data Structures and Algorithms
    6 followers study24x7 23 Dec 2025 01:25 PM study24x7 study24x7

    Best data structure for implementing priority scheduling:

    A

    Stack

    B

    Queue

    C

    Heap

    D

    Linked list

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    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
    Data Structures and Algorithms
    6 followers study24x7 23 Dec 2025 01:25 PM study24x7 study24x7

    A queue where insertion is allowed at both ends but deletion only at one end is called:

    A

    Input-restricted deque

    B

    Output-restricted deque

    C

    Circular queue

    D

    Priority queue

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    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
    Data Structures and Algorithms
    6 followers study24x7 23 Dec 2025 01:24 PM study24x7 study24x7

    Which of the following is not an application of stack?

    A

    Checking balanced parentheses

    B

    Function call management

    C

    Level order traversal

    D

    Reversing a string

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    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
    Data Structures and Algorithms
    6 followers study24x7 08 Dec 2025 05:52 PM study24x7 study24x7

    Which traversal gives nodes in sorted order for a BST?

    A

    Preorder

    B

    Postorder

    C

    Inorder

    D

    Level order

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    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
    Data Structures and Algorithms
    6 followers study24x7 08 Dec 2025 05:49 PM study24x7 study24x7

    What is the time complexity of searching an element in an AVL tree?

    A

    O(n)

    B

    O(log n)

    C

    O(1)

    D

    O(n log n)

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    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
    Data Structures and Algorithms
    6 followers study24x7 08 Dec 2025 05:41 PM study24x7 study24x7

    Which data structure is used to convert infix to postfix expression?

    A

    Queue

    B

    Stack

    C

    Tree

    D

    Heap

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    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
    Data Structures and Algorithms
    6 followers study24x7 05 Dec 2025 04:38 PM study24x7 study24x7

    In a complete binary tree, the height is:

    A

    log n

    B

    n

    C

    n log n

    D

    constant

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    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
    Data Structures and Algorithms
    6 followers study24x7 05 Dec 2025 04:38 PM study24x7 study24x7

    Hash collisions can be handled by:

    A

    Resizing memory

    B

    Chaining

    C

    Segmentation

    D

    Paging

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    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
    Data Structures and Algorithms
    6 followers study24x7 05 Dec 2025 04:31 PM study24x7 study24x7

    Which of the following is not a stable sorting algorithm?

    A

    Bubble Sort

    B

    Merge Sort

    C

    Selection Sort

    D

    Insertion Sort

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    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
    Data Structures and Algorithms
    6 followers study24x7 04 Dec 2025 01:07 PM study24x7 study24x7

    What is the worst-case time complexity of Quick Sort?

    A

    O(n log n)

    B

    O(n²)

    C

    O(log n)

    D

    O(n)

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    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
    Data Structures and Algorithms
    6 followers study24x7 04 Dec 2025 01:05 PM study24x7 study24x7

    Which data structure is best suited for implementing recursion?

    A

    Queue

    B

    Stack

    C

    Heap

    D

    Tree

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