Which is the best algorithm for sorting of elements?
Quicksort. Quicksort is one of the most efficient sorting algorithms, and this makes of it one of the most used as well. The first thing to do is to select a pivot number, this number will separate the data, on its left are the numbers smaller than it and the greater numbers on the right.
Which algorithm is typically take the least amount of work to sort a list of n items?
Merge-insertion sort
Merge-insertion sort is the sorting algorithm with the minimum possible comparisons for n items whenever n ≤ 15 or 20 ≤ n ≤ 22, and it has the fewest comparisons known for n ≤ 46.
Which algorithm gives best performance when input array is sorted or nearly sorted?
Insertion sort takes linear time when input array is sorted or almost sorted (maximum 1 or 2 elements are misplaced). All other sorting algorithms mentioned above will take more than lienear time in their typical implementation.
Which sorting algorithm is the lowest algorithm for large number of data?
But in computer graphics, it is popular to detect a very small error (like swap of two elements) in almost sorted array. This algorithm is used when the input array’s length is around 10 – 20. Usually, insertion sort is preferred over selection sort. But selection sort takes less write than insertion sort.
Which sorting algorithm has least number of comparisons?
You have rightly pointed out that for sorted array, minimum no. of comparison is n-1 (for bubble sort).
Which of the following algorithm has the lowest best case time complexity?
Time and Space Complexity Comparison Table :
| Sorting Algorithm | Time Complexity | Space Complexity |
|---|---|---|
| Best Case | Worst Case | |
| Bubble Sort | Ω(N) | O(1) |
| Selection Sort | Ω(N2) | O(1) |
| Insertion Sort | Ω(N) | O(1) |
Which algorithm is best for large datasets?
the Quick sort algorithm generally is the best for large data sets and long keys.
Which sorting algorithm is the least efficient sorting algorithm time complexity?
When order of input is not known, merge sort is preferred as it has worst case time complexity of nlogn and it is stable as well. When the array is sorted, insertion and bubble sort gives complexity of n but quick sort gives complexity of n^2.