Function qwt::perf_and_test_utils::gen_queries_pairs

pub fn gen_queries_pairs(
    n_queries: usize,
    range_size: usize,
    sigma: usize
) -> Vec<(usize, usize)>

Generates a random vector of n_queries. Each query is a pair: a value in [0, range_size] and a symbol in [0, sigma]. This can be used to generate random queries for rank over a general alphabet of size sigma.