C++程序  |  35行  |  819 B

//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <random>

// template<class IntType = int>
// class discrete_distribution

// result_type max() const;

#include <random>
#include <cassert>

int main()
{
    {
        typedef std::discrete_distribution<> D;
        double p0[] = {.3, .1, .6};
        D d(p0, p0+3);
        assert(d.max() == 2);
    }
    {
        typedef std::discrete_distribution<> D;
        double p0[] = {.3, .1, .6, .2};
        D d(p0, p0+4);
        assert(d.max() == 3);
    }
}