What is Merge Sort?
Click to see answer
Merge Sort is a divide-and-conquer algorithm that first divides the array into equal halves until atomic values are achieved, and then merges the sorted halves back together.
Click to see question
What is Merge Sort?
Merge Sort is a divide-and-conquer algorithm that first divides the array into equal halves until atomic values are achieved, and then merges the sorted halves back together.
What is the role of 'i' in the Quick Sort algorithm?
'i' is used to track the position where the next smaller element than the pivot should be placed during the partitioning process.
What is Insertion Sort?
Insertion sort is a simple sorting algorithm that works by virtually splitting an array into a sorted and an unsorted part, picking values from the unsorted part, and placing them at the correct position in the sorted part.
What is the process of dividing the array in Quick Sort?
In Quick Sort, the pivot element is positioned such that elements less than the pivot are on the left side and elements greater than the pivot are on the right side.
What happens after placing each element at its correct position in Counting Sort?
After placing each element, its count is decreased by one to ensure the next occurrence is placed at the correct subsequent index.
What is an advantage of Selection Sort?
The main advantage of selection sort is that it performs well on small lists.
What is a max-heap?
A max-heap is a complete binary tree where the value of each parent node is greater than or equal to the values of its child nodes.
What happens when the root is removed from a heap?
When the root is removed from a heap, the last element is typically moved to the root position, and then heapify is performed to restore the heap property.
What happens during the first pass of Bubble Sort?
During the first pass of Bubble Sort, adjacent elements are compared, and if they are not in the correct order, they are swapped, progressively moving the largest element to its correct position.
What occurs in the third pass of Bubble Sort?
In the third pass of Bubble Sort, elements are compared and swapped as necessary, ensuring that elements like 5, 11, and 12 are sorted correctly, with further swaps occurring until the entire list is sorted.
What does the index of smaller element represent in Quick Sort?
The index of the smaller element in Quick Sort is used to track the position where the next smaller element should be placed during the partitioning process.
What are the advantages of Heap Sort?
The advantages of Heap Sort include its efficiency and the ability to implement it as an in-place sorting algorithm.
What does it mean when elements are not in their correct place in Bubble Sort?
When elements are not in their correct place in Bubble Sort, it indicates that they are out of order and require swapping to achieve the desired ascending arrangement.
What is the process to transform a heap into a max-heap?
To transform a heap into a max-heap, ensure that each parent node is greater than or equal to its child nodes, swapping nodes as necessary.
What happens during the first pass of Selection Sort?
During the first pass, the algorithm traverses the entire array to find the smallest value, which is 11 in this case, and swaps it with the first element, 64.
What happens when arr[j] is less than or equal to the pivot in Quick Sort?
When arr[j] is less than or equal to the pivot, 'i' is incremented, and the elements at arr[i] and arr[j] are swapped.
What does it mean to process the input data in Counting Sort?
Processing the input data involves iterating through the sequence, determining the position for each element based on its count, and adjusting the count after placing each element.
What is Bubble Sort?
Bubble Sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements, and swaps them if they are in the wrong order. The process is repeated until no swaps are needed, indicating that the list is sorted.
What is the significance of the position of an element in Counting Sort?
The position of an element indicates where it should be placed in the output array, which is determined by its count and previous occurrences.
What is the result of swapping arr[i+1] and arr[high] in Quick Sort?
Swapping arr[i+1] and arr[high] places the pivot in its correct position within the sorted array.
What is a max heap in the context of Heap Sort?
A max heap is a complete binary tree where the value of each node is greater than or equal to the values of its children, which is used in the Heap Sort algorithm to organize elements.
What is a disadvantage of Selection Sort?
The primary disadvantage of selection sort is its poor efficiency when dealing with large lists, requiring n-squared steps for sorting n elements.
Why is sorting necessary?
Sorting is necessary to make searching easier, especially when dealing with a large amount of randomly arranged data.
What is the Conquer step in Merge Sort?
In the Conquer step, the sub-arrays are sorted using recursion.
What is the Quick Sort algorithm?
Quick Sort is a comparison-based sorting algorithm that uses a divide-and-conquer approach to sort elements by selecting a 'pivot' and partitioning the array into elements less than and greater than the pivot.
What does it mean to remove the maximum element in Heap Sort?
Removing the maximum element in Heap Sort involves taking the root of the max heap, moving it to the end of the array, and then heapifying the remaining elements to maintain the max heap property.
What is Quick Sort?
Quick Sort is a sorting algorithm based on the divide and conquer approach, where an array is divided into subarrays by selecting a pivot element.
What are the disadvantages of Insertion Sort?
The disadvantage of insertion sort is that it does not perform as well as other sorting algorithms and requires n-squared steps for every n elements, making it inefficient for large lists.
What happens when each subarray in Quick Sort contains a single element?
When each subarray contains a single element, the elements are already sorted, and they are combined to form a sorted array.
What is the significance of adjacent element comparisons in Bubble Sort?
Adjacent element comparisons in Bubble Sort are crucial as they determine whether a swap is needed to sort the elements in the correct order, ensuring that larger elements move towards the end of the list.
What is the initial step in the Bubble Sort algorithm?
Bubble Sort starts by comparing the first two elements to check which one is greater.
What is a disadvantage of Merge Sort?
Merge Sort requires extra space, specifically O(N) space.
What is heapify?
Heapify is the process of rearranging the elements in a heap data structure to maintain the heap property after an element has been removed or added.
What does it mean to rotate an array clockwise?
Rotating an array clockwise means shifting all elements of the array to the right by one position, with the last element moving to the first position.
What does it mean to modify the count array to store the sum of previous counts?
Modifying the count array to store the sum of previous counts means updating each index in the array to reflect the cumulative total of counts up to that index, which helps in determining the position of each element in the output sequence.
What is the result after the third pass of Selection Sort?
After the third pass, the algorithm identifies 22 as the third smallest value and swaps it with the element currently in the third position, 25.
What is the significance of the sorted sub-array in Bubble Sort?
The sorted sub-array in Bubble Sort represents the portion of the list that has been sorted correctly, allowing the algorithm to focus on the remaining unsorted elements in subsequent passes.
What happens during the first pass of Bubble Sort?
During the first pass of Bubble Sort, the algorithm compares adjacent elements and performs swaps when the left element is greater than the right element, resulting in the largest element 'bubbling' to the end of the list.
What is the initial state of the array in the Quick Sort example?
The initial state of the array in the Quick Sort example is arr[] = {10, 80, 30, 90, 40, 50, 70}.
What is an advantage of Counting Sort?
An advantage of Counting Sort is that it is stable, meaning it preserves the relative order of equal elements, and it can outperform comparison-based sorts for small key ranges.
How does Sorting improve searching in datasets?
Sorting improves searching by allowing the use of efficient methods like Binary search, which can only be applied to sorted data.
How does Merge Sort compare in efficiency to other sorting algorithms?
Merge Sort is less efficient than other sorting algorithms in certain scenarios.
What is the process of merging elements in Merge Sort?
The process involves comparing elements from divided arrays and combining them into a new list in a sorted manner after dividing the array into the smallest units.
What happens when a parent node is smaller than its child node in a heap?
When a parent node is smaller than its child node, a swap is performed to maintain the max-heap property.
What is Heap Sort?
Heap Sort is a comparison-based sorting algorithm that uses a binary heap data structure to sort elements by repeatedly removing the maximum element and transforming the remaining elements into a max heap.
How does the modified count array indicate the position of each object in the output sequence?
The modified count array indicates the position of each object in the output sequence by providing the cumulative counts, which represent the final positions of each element in the sorted output.
What is the process of heapifying in Heap Sort?
Heapifying in Heap Sort is the process of rearranging the elements of a binary heap to maintain the max heap property after the removal of the root element.
What happens when arr[j] is less than or equal to the pivot in Quick Sort?
When arr[j] is less than or equal to the pivot, the index of the smaller element is incremented, and the elements at that index and j are swapped.
How does Insertion Sort work?
Insertion sort works by comparing the first two elements of the array, swapping them if they are not in ascending order, and then continuing this process for the rest of the elements.
What is a Sorting Algorithm?
A sorting algorithm refers to a method for rearranging a given array or list of elements according to a comparison operator on the elements.
Why is Quick Sort considered efficient in terms of storage?
Quick Sort sorts in place, meaning no additional storage is required.
How does Merge Sort handle input reading?
Reading of the input during the run-creation step is sequential, which means not much seeking is required.
What is the sorted array after removing 4 and performing heapify?
The sorted array after removing 4 and performing heapify is arr[] = {1, 3, 4, 5, 10}.
What is the Selection Sort algorithm?
Selection Sort is a sorting algorithm that divides the input array into two parts: a sorted part and an unsorted part. It repeatedly selects the smallest (or largest) element from the unsorted part and moves it to the end of the sorted part.
What is Bubble Sort?
Bubble Sort is the simplest sorting algorithm that works by repeatedly swapping the adjacent elements if they are in the wrong order.
What is the definition of pivot in Quick Sort?
The pivot in Quick Sort is the element chosen to partition the array into two sub-arrays, where elements less than the pivot are on one side and elements greater than the pivot are on the other.
What are the advantages of Insertion Sort?
The main advantage of insertion sort is its simplicity, and it performs well when dealing with a small list.
What is Counting Sort?
Counting sort is a sorting technique based on keys between a specific range, which counts the number of objects having distinct key values and calculates the position of each object in the output sequence.
What happens when the root element is deleted from a max heap?
When the root element is deleted from a max heap, it is typically swapped with the last node, and then the heap is heapified to restore the max heap property.
What indicates that the Bubble Sort algorithm has completed sorting?
The Bubble Sort algorithm is considered complete when it makes a full pass through the list without performing any swaps, indicating that the list is sorted.
What is the role of the partition function in Quick Sort?
The partition function in Quick Sort is responsible for rearranging the elements around the pivot and recursively sorting the left and right partitions.
What is Non-comparison-based Sorting?
Non-comparison-based sorting is a type of sorting algorithm where elements are not compared to determine their order.
What is the initial step in the working of the Merge Sort algorithm?
The initial step is to check if the left index of the array is less than the right index, and if so, calculate its midpoint.
What is Merge Sort?
Merge Sort is a sorting algorithm based on the Divide and Conquer paradigm, where the array is divided into two equal halves and then combined in a sorted manner.
What does it mean to divide an array into atomic values in Merge Sort?
Dividing an array into atomic values means breaking it down to the smallest possible units where further division is not possible.
What occurs in the second pass of Selection Sort?
In the second pass, the algorithm finds the second smallest value, which is 12, and swaps it with the element currently in the second position, 25.
What is the time complexity of Bubble Sort?
The average and worst-case time complexity of Bubble Sort is quite high, requiring n-squared processing steps for every n number of elements to be sorted.
What happens when j is equal to high - 1 in Quick Sort?
When j is equal to high - 1 in Quick Sort, the loop exits, indicating that all elements have been compared to the pivot.
What are the time complexities of Counting Sort?
The best-case and average-case time complexity of Counting Sort is O(n + k), while the worst-case time complexity is also O(n + k).
What is a disadvantage of Counting Sort?
A disadvantage of Counting Sort is its high memory usage for large key ranges (k) and it is limited to sorting integers or small integer keys.
Is Bubble Sort suitable for large data sets?
Bubble Sort is not suitable for large data sets due to its high time complexity.
When is Bubble Sort more efficient than Quick Sort?
Bubble Sort is more efficient than Quick Sort when the list is already sorted.
What does the Divide step in Merge Sort entail?
In the Divide step, the array/list divides itself recursively into sub-arrays until the base case is reached.
What is a count array?
A count array is a data structure used to store the count of each unique element in a dataset, where each index corresponds to a specific element and its value represents the number of occurrences.
What is the process of outputting each object from the input sequence followed by increasing its count by 1?
This process involves placing each unique element from the input data into an output array at an index determined by its count, and then incrementing the count for subsequent occurrences.
What is Heap Sort?
Heap sort is a comparison-based sorting technique based on the Binary Heap data structure, similar to selection sort, where the minimum element is placed at the beginning and the process is repeated for the remaining elements.
What is an advantage of Bubble Sort?
The primary advantage of Bubble Sort is that it is popular and easy to implement.
What are the disadvantages of Heap Sort?
The disadvantages of Heap Sort include requiring more space for sorting and being less efficient than Quick Sort in many cases.
How does Bubble Sort handle elements?
In Bubble Sort, elements are swapped in place without using additional temporary storage.
What is a disadvantage of Quick Sort?
The worst-case performance of Quick Sort is similar to the average performances of bubble, insertion, or selection sorts.
What is the Combine step in Merge Sort?
The Combine step makes use of the merge() function to combine the sub-arrays into the final sorted array.
What is the cumulative count in the context of an array?
The cumulative count is the index of each element of the original array found in the count array, representing the total occurrences of elements up to that index.
What is the definition of Bubble Sort?
Bubble Sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements, and swaps them if they are in the wrong order, resulting in the largest unsorted elements 'bubbling' to the top of the list.
What condition must be met to continue dividing arrays in Merge Sort?
The condition is that the left index must be less than the right index for both arrays.
What does it mean when arr[j] is greater than the pivot in Quick Sort?
When arr[j] is greater than the pivot, no action is taken, meaning 'i' remains unchanged and no swap occurs.
What is the result of swapping elements in Quick Sort?
Swapping elements in Quick Sort helps to partition the array into elements less than or equal to the pivot and those greater than the pivot.
What is a disadvantage of Bubble Sort?
The main disadvantage of Bubble Sort is that it does not deal well with a list containing a huge number of items.
What is an advantage of Quick Sort?
Quick Sort is regarded as the best sorting algorithm and can efficiently handle a huge list of items.
When is Insertion Sort particularly useful?
Insertion sort is particularly useful when sorting a list of few items.
When is Radix Sort more efficient than Quick Sort?
Radix Sort is more efficient than Quick Sort when the sorting elements are integers.
What is heapify?
Heapify is the process of rearranging the elements in a heap data structure to maintain the heap property after an element has been removed or added.
What is the process of finding midpoints in Merge Sort?
In Merge Sort, midpoints are calculated for both halves of the array to facilitate further division until atomic units are reached.
What is the role of the pivot in Quick Sort?
The pivot in Quick Sort is the element chosen to partition the array, which helps in dividing the array into two sub-arrays for further sorting.
What is a Sorting Algorithm?
A sorting algorithm is a method used to arrange the elements of a list in a certain order, either ascending or descending.
Why are Sorting Algorithms important in Computer Science?
Sorting algorithms are important because they reduce the complexity of a problem and have a wide range of applications, including searching algorithms and database algorithms.
What is Selection Sort?
Selection sort is a sorting technique where the minimum element is found in every iteration and placed at the beginning of the array, dividing it into sorted and unsorted subarrays.
What is the space requirement of Insertion Sort?
Insertion sort is an in-place sorting algorithm, so its space requirement is minimal.
What is the input data for the Counting Sort algorithm example?
The input data for the Counting Sort algorithm example is the array: arr[] = {1, 4, 1, 2, 7, 5, 2}.
What does it mean when all elements smaller than 70 are before it in Quick Sort?
It means that the partitioning process has successfully placed the pivot (70) in its correct position, with all smaller elements to its left and larger elements to its right.
How is a complete binary tree built from an array in Heap Sort?
A complete binary tree is built from an array by arranging the elements in a tree structure where each level is fully filled except possibly for the last level.
What is the performance influence of initial ordering in Selection Sort?
The performance of selection sort is easily influenced by the initial ordering of the items before the sorting process.
What is Comparison-based Sorting?
Comparison-based sorting is a type of sorting algorithm where elements are compared to decide their new order in the data structure.
How does Quick Sort compare to Selection Sort?
Quick Sort is much more efficient than Selection Sort, especially for larger datasets.
What is an advantage of Merge Sort?
Merge Sort can be applied to files of any size.