Which is better heap sort or merge sort or quick sort?

Merge sort is more efficient and works faster than quick sort in case of larger array size or datasets. Quick sort is more efficient and works faster than merge sort in case of smaller array size or datasets. Sorting method : The quick sort is internal sorting method where the data is sorted in main memory.

Which sorting is best and why?

Time and Space Complexity Comparison Table :

Sorting Algorithm	Time Complexity
	Best Case	Worst Case
Insertion Sort	Ω(N)	O(N2)
Merge Sort	Ω(N log N)	O(N log N)
Heap Sort	Ω(N log N)	O(N log N)

What is difference between selection sort and insertion sort?

The main difference between insertion sort and selection sort is that insertion sort performs sorting by exchanging an element at a time with the partially sorted array while selection sort performs sorting by selecting the smallest element from the remaining elements and exchanging it with the element in the correct …

Is merge sort faster than insertion sort?

Insertion Sort is preferred for fewer elements. It becomes fast when data is already sorted or nearly sorted because it skips the sorted values. Efficiency: Considering average time complexity of both algorithm we can say that Merge Sort is efficient in terms of time and Insertion Sort is efficient in terms of space.

Which sorting is the best?

Time Complexities of Sorting Algorithms:

Algorithm	Best	Worst
Bubble Sort	Ω(n)	O(n^2)
Merge Sort	Ω(n log(n))	O(n log(n))
Insertion Sort	Ω(n)	O(n^2)
Selection Sort	Ω(n^2)	O(n^2)