The least efficiant algorithm I can think with a finite upper bound on runtime is permutation sort. The idea is to generate every permutation (combination) of the inputs and check if it’s sorted. The upper bound is O(n!), the lower bound is O(n) when the array is already sorted.
Which of the following sorting techniques is not efficient compared?
Which of the following is not true about comparison based sorting algorithms? Heap Sort is not a comparison based sorting algorithm.
Which sorting algorithm is more efficient?
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 searching algorithm is more efficient?
Binary search is a more efficient search algorithm which relies on the elements in the list being sorted.
Which of the following algorithm is not stable?
Explanation: Out of the given options quick sort is the only algorithm which is not stable.
Which of the following sorting algorithm has the lowest worst case complexity?
ANSWER: Merge sort
The merge sort uses the weak complexity their complexity is shown as O(n log n).
Which of the following sorting algorithm has the lowest best case complexity?
2 Answers. Insertion sort has minimum running time complexity O(n) in best case i.e when the array is already sorted.
Is an efficient algorithm for finding an item from a sorted list of items?
Binary search is an efficient algorithm for finding an item from a sorted list of items. It works by repeatedly dividing in half the portion of the list that could contain the item, until you’ve narrowed down the possible locations to just one.
Which search algorithm requires the least memory in the worst case?
in general case on a tree based searching methods Depth-First Search takes less memory since only the nodes on the current path are stored, but in Breadth First Search, all of the tree that has generated must be stored.
Which of the following sorting algorithms is not stable sorting?
Explanation: out of the given options selection sort is the only algorithm which is not stable. it is because the order of identical elements in sorted output may be different from input array.
Which of the following stable sorting algorithm takes the least time?
7. Which of the following stable sorting algorithm takes the least time when applied to an almost sorted array? Explanation: Sorting a partially sorted array with insertion sort takes linear time. Merge sort is stable, even though merge and fast sort have O(n*logn) complexity.
