Computer Knowledge

Data Structures and Algorithms

1,518 Questions

Data Structures and Algorithms form the core of computer science, focusing on arrays, linked lists, trees, and sorting mechanisms. These concepts are essential for solving complex computational problems efficiently. Test takers preparing for technical and administrative IT exams will find these questions highly relevant.

Array OperationsLinked List ApplicationsSorting AlgorithmsTree Data StructuresMultilevel IndexingAlgorithm Time Complexity

Data Structures and Algorithms Questions

Multiple choice

Which sorting algorithm repeatedly compares adjacent elements and swaps them if they are in the wrong order, continuing until no more swaps are needed?

  1. Bubble Sort

  2. Selection Sort

  3. Merge Sort

  4. Quick Sort
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bubble Sort repeatedly compares adjacent elements and swaps them if they are in the wrong order, moving the larger elements to the end of the array with each pass.

Multiple choice

Which sorting algorithm finds the minimum element from the unsorted portion of the array and places it at the beginning, then repeats this process until the entire array is sorted?

  1. Bubble Sort

  2. Selection Sort

  3. Merge Sort

  4. Quick Sort
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Selection Sort repeatedly finds the minimum element from the unsorted portion of the array and places it at the beginning, reducing the unsorted portion with each iteration.

Multiple choice

Which sorting algorithm selects a pivot element, partitions the array into two subarrays based on the pivot, and recursively applies the same process to the subarrays until the entire array is sorted?

  1. Bubble Sort

  2. Selection Sort

  3. Merge Sort

  4. Quick Sort
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Quick Sort selects a pivot element, partitions the array into two subarrays based on the pivot, and recursively applies the same process to the subarrays, achieving efficient sorting.

Multiple choice

Which sorting algorithm builds a sorted array one element at a time by inserting each unsorted element into its correct position in the sorted portion of the array?

  1. Bubble Sort

  2. Selection Sort

  3. Merge Sort

  4. Insertion Sort
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Insertion Sort builds a sorted array one element at a time by inserting each unsorted element into its correct position in the sorted portion of the array.

Multiple choice

Which sorting algorithm is known for its ability to sort large arrays efficiently by dividing the array into smaller subarrays, sorting them recursively, and then combining them back together?

  1. Bubble Sort

  2. Selection Sort

  3. Merge Sort

  4. Quick Sort
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Merge Sort is known for its efficient sorting of large arrays by dividing them into smaller subarrays, sorting them recursively, and then combining them back together.

Multiple choice

Which sorting algorithm is often used for sorting linked lists, where it repeatedly finds the minimum element from the unsorted portion of the list and moves it to the front?

  1. Bubble Sort

  2. Selection Sort

  3. Merge Sort

  4. Quick Sort
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Selection Sort is often used for sorting linked lists, where it repeatedly finds the minimum element from the unsorted portion of the list and moves it to the front.

Multiple choice

Which sorting algorithm is based on the idea of repeatedly swapping adjacent elements if they are in the wrong order, moving the larger elements to the end of the array?

  1. Bubble Sort

  2. Selection Sort

  3. Merge Sort

  4. Quick Sort
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bubble Sort is based on the idea of repeatedly swapping adjacent elements if they are in the wrong order, moving the larger elements to the end of the array.

Multiple choice

Which sorting algorithm is known for its ability to sort arrays in place, meaning it modifies the original array without creating a new one?

  1. Bubble Sort

  2. Selection Sort

  3. Merge Sort

  4. Quick Sort
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Quick Sort is known for its ability to sort arrays in place, meaning it modifies the original array without creating a new one.

Multiple choice

Which sorting algorithm is often used for sorting large arrays, where it repeatedly divides the array into smaller subarrays, sorts them recursively, and then combines them back together?

  1. Bubble Sort

  2. Selection Sort

  3. Merge Sort

  4. Quick Sort
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Merge Sort is often used for sorting large arrays, where it repeatedly divides the array into smaller subarrays, sorts them recursively, and then combines them back together.

Multiple choice

Which sorting algorithm is known for its ability to sort linked lists efficiently by repeatedly finding the minimum element from the unsorted portion of the list and moving it to the front?

  1. Bubble Sort

  2. Selection Sort

  3. Merge Sort

  4. Quick Sort
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Selection Sort is known for its ability to sort linked lists efficiently by repeatedly finding the minimum element from the unsorted portion of the list and moving it to the front.

Multiple choice

Which sorting algorithm is based on the idea of repeatedly swapping adjacent elements if they are in the wrong order, moving the larger elements to the end of the array?

  1. Bubble Sort

  2. Selection Sort

  3. Merge Sort

  4. Quick Sort
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bubble Sort is based on the idea of repeatedly swapping adjacent elements if they are in the wrong order, moving the larger elements to the end of the array.

Multiple choice

Which sorting algorithm is known for its ability to sort arrays in place, meaning it modifies the original array without creating a new one?

  1. Bubble Sort

  2. Selection Sort

  3. Merge Sort

  4. Quick Sort
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Quick Sort is known for its ability to sort arrays in place, meaning it modifies the original array without creating a new one.

Multiple choice

Which sorting algorithm is often used for sorting large arrays, where it repeatedly divides the array into smaller subarrays, sorts them recursively, and then combines them back together?

  1. Bubble Sort

  2. Selection Sort

  3. Merge Sort

  4. Quick Sort
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Merge Sort is often used for sorting large arrays, where it repeatedly divides the array into smaller subarrays, sorts them recursively, and then combines them back together.

Multiple choice

Which sorting algorithm is known for its ability to sort linked lists efficiently by repeatedly finding the minimum element from the unsorted portion of the list and moving it to the front?

  1. Bubble Sort

  2. Selection Sort

  3. Merge Sort

  4. Quick Sort
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Selection Sort is known for its ability to sort linked lists efficiently by repeatedly finding the minimum element from the unsorted portion of the list and moving it to the front.

Multiple choice

What is the role of Data Catalog in Data Governance?

  1. To provide a centralized repository of data assets

  2. To enable data discovery and understanding

  3. To facilitate data lineage tracking

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Data Catalog serves as a central repository for organizing and managing data assets, enabling data discovery and understanding, facilitating data lineage tracking, and providing a comprehensive view of the data landscape within an organization.