How many ways to put n objects into n bins, with object i not in bin i for 1<=i<=n ??
23701
I have a problem understanding the proof of Rencontres numbers (Derangements)
35483
Multiple assignment and evaluation order in Python
67144
Is list::size() really O(n)?
98618
Integer partition with fixed number of summands but without order
30575
How to precalculate valid number of combinations instead of using while loop?
44308
Shuffling a list of objects
54631
Distribute $N$ objects to $K$ boxes such that no box has more than $c$ objects in it
67173
How to collapse consecutive numbers into ranges?
6432
How many ways can N elements be partitioned into subsets of size K?
120095
How many ways to split n elements in k groups?
95911
Using Pairs or 2-tuples in Java
43204
How to throw many rigid bodies orderly?
106603
How to tell if an array is a permutation in O(n)?
98850
A positional number system for enumerating fixed-size subsets?
94458
how to interleaving lists
68791
Creating a list in Python with multiple copies of a given object in a single line
98355
Is the set of all possible binary strings countable?