
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Give an example showing that quicksort is not a stable sorting
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- A sequential search of a sorted list can halt when the target is less than a given element in the list. Define a modified version of this algorithm and state the computational complexity, using big-O notation, of its best-, worst-, and average- case performances.arrow_forwardDraw the state of the array after a first pass of a shellsort with gap size 5, and then again after a second pass with gap size 3.arrow_forwardWrite a well-documented, Python program, hmwk3Q5.py that implements the Selection-Sort algorithm. Selection-Sort segments the list into sorted and unsorted elements. The algorithm continues to remove the smallest element of the unsorted list and adds it to the sorted segment. Implement the algorithm that accepts an unsorted list and returns a sorted one - in ascending order. 5 3 3 3 3 3 3 4 4 5 4 8 4 5 5 5 4 8 4 8 5 6 6 8 6 6 6 8 6 8 Initial List Minimum Swaps Position: Sorted List Length 1 Minimum Swaps Position: Sorted List Length 2 Minimum Swaps Position: Sorted List Length 3 Minimum Swaps Position Sorted List Selection Sort Algorithm Hints: Convince yourself that the algorithm and Python implementation is correct by calling the sorting function with a list [50,20,10,80,40], and printing the sorted result. Your algorithm should use a while-loop to ensure that the ascending order is achieved.arrow_forward
- Even when employing a self-balancing binary search tree to construct binary tree sort, the worst-case time required is O(n log n), making it slower than merge sort.arrow_forwardImplement the following algorithms in Java:The pseudocode for QUICKSORT introduced in (slide 14), includingprocedure PARTITION implementing right-most element pivot selection (slide 13). Slide 13:PARTITION(A,p,r) x := A[r] i := p – 1 for j = p to r - 1 if A[j] x i := i + 1 SWAP(A[i],A[j]) SWAP(A[i+1],A[r]) return i + 1 Slide 14:QUICKSORT(A,p,r) if p < r q := PARTITION(A,p,r) QUICKSORT(A,p,q-1) QUICKSORT(A,q+1,r)arrow_forwardYou are given an array A[1, ..., n]. Describe an algorithm (proper/efficient pseudocode required) that checks whether the given array is a Heap, and outputs 'yes/no'.arrow_forward
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