All Questions
3
questions
4
votes
1
answer
218
views
probability of number of comparisons of randomized quicksort
Let's assume we have an array of length $5$ which contains pairwise different integers. The subcript denotes the order of the respective integer, so $i_1<i_2<i_3<i_4<i_5$.
We apply the ...
- 4,564
0
votes
1
answer
68
views
Why is the probability of two elements being compared equal to 2/(𝑗−𝑖+1) in random quicksort?
After reading Why is the probability of two elements $y_i$, $y_j$ being compared equal to $2/(j - i + 1)$ in random quicksort?
I am confused as to what $j-i+1$ means in the denominator.
Is it the ...
- 927
1
vote
1
answer
278
views
Randomized Quick Sort and Partition Probability?
We know about Quick Sort and Randomized Version and Partition. I ran into a Fact when I read my notes.
Let $0 < a < 0.5$ be some constant. We have an $n$-element array as input. Randomized ...
