Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Simple, Optimal Algorithms for Random Sampling Without Replacement   Consider the fundamental problem of drawing a simple random sample of size k
without replacement from [n] := {1, . . . , n}. Although a number of classical
algorithms exist for this problem, we construct algorithms that are even
simpler, easier to implement, and have optimal space and time complexity.

25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int