Take the 2-minute tour ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

I hope someone can help me answer the following question. Thanks!

Here is a pseudo code of Permute-By-Sorting algorithm:

Permute-By-Sorting (A)

    n = A.length

    let P[1..n] be a new array

    for i = 1 to n

    P[i] = Random (1,n^3)

         sort A, using P as sort keys

In the above algorithm, the array P represents the priorities of the elements in array A. Line 4 chooses a random number between 1 and n^3.

The question is what is the probability that all priorities in P are unique? and how do I get the probability?

share|improve this question

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.