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std::uniform_int_distribution

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C++
 
Numerics библиотеки
 
Псевдослучайных чисел поколения
Двигатели и адаптеры
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Engines and engine adaptors
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linear_congruential_engine(C++11)
mersenne_twister_engine(C++11)
subtract_with_carry_engine(C++11)
discard_block_engine(C++11)
independent_bits_engine(C++11)
shuffle_order_engine(C++11)
Генераторы
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Generators
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random_device(C++11)
Распределения
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Distributions
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Равномерное распределение
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Uniform distributions
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uniform_int_distribution(C++11)
uniform_real_distribution(C++11)
generate_canonical(C++11)
Бернулли распределения
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Bernoulli distributions
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bernoulli_distribution(C++11)
binomial_distribution(C++11)
negative_binomial_distribution(C++11)
geometric_distribution(C++11)
Распределения Пуассона
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Poisson distributions
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poisson_distribution(C++11)
exponential_distribution(C++11)
gamma_distribution(C++11)
weibull_distribution(C++11)
extreme_value_distribution(C++11)
Нормальное распределение
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Normal distributions
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normal_distribution(C++11)
lognormal_distribution(C++11)
chi_squared_distribution(C++11)
cauchy_distribution(C++11)
fisher_f_distribution(C++11)
student_t_distribution(C++11)
Выборка распределения
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Sampling distributions
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discrete_distribution(C++11)
piecewise_constant_distribution(C++11)
piecewise_linear_distribution(C++11)
Семенной последовательности
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Seed Sequences
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seed_seq(C++11)
C библиотеки
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C library
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rand
srand
RAND_MAX
 
std::uniform_int_distribution
Член функций
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Member functions
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uniform_int_distribution::uniform_int_distribution
uniform_int_distribution::reset
Поколение
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Generation
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uniform_int_distribution::operator()
Характеристики
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Characteristics
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uniform_int_distribution::a
uniform_int_distribution::b
uniform_int_distribution::param
uniform_int_distribution::min
uniform_int_distribution::max
Не являющиеся членами функций
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Non-member functions
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operator==
operator!=
operator<<
operator>>
 
Заголовочный файл <random>
template< class IntType = int >
class uniform_int_distribution;
 (начиная с C++11)
Производит случайное число i значения, равномерно распределенные на закрытом [a, b] интервал, то есть распределяются в соответствии с дискретной функции вероятности
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Produces random integer values i, uniformly distributed on the closed interval [a, b], that is, distributed according to the discrete probability function
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P(i|a,b) =
1
b − a + 1
.

Содержание

[править] Член типов

Член типа
Original:
Member type
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 Definition
result_type IntType
param_type
Тип набора параметров, не указано
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the type of the parameter set, unspecified
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[править] Член функций
строит новые распределения
Original:
constructs new distribution
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(public функция-член) [edit]
Восстанавливает внутреннее состояние распределения
Original:
resets the internal state of the distribution
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(public функция-член) [edit]
Поколение
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Generation
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создает следующее случайное число в распределении
Original:
generates the next random number in the distribution
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(public функция-член) [edit]
Характеристики
Original:
Characteristics
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возвращает' параметров распределения (минимальное значение)
Original:
returns the a distribution parameter (minimum value)
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(public функция-член) [edit]
возвращает B параметр распределения (максимальное значение)
Original:
returns the b distribution parameter (maximum value)
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(public функция-член) [edit]
получает или задает объект распределения параметра
Original:
gets or sets the distribution parameter object
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(public функция-член) [edit]
возвращает минимальное потенциально сгенерированное значение
Original:
returns the minimum potentially generated value
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(public функция-член) [edit]
возвращает максимальное потенциально сгенерированное значение
Original:
returns the maximum potentially generated value
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(public функция-член) [edit]

[править] Не являющиеся членами функций
сравнивает два объекта распределения
Original:
compares two distribution objects
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(функция) [edit]
осуществляет входной поток и выход на псевдослучайных чисел распределения
Original:
performs stream input and output on pseudo-random number distribution
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(функция) [edit]

[править] Пример

Это программа, имитирующая бросали 6-кубиков .
Original:
This program simulates throwing 6-sided dice.
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#include <random>
#include <iostream>
int main()
{
    std::random_device rd;
    std::mt19937 gen(rd());
    std::uniform_int_distribution<> dis(1, 6);
    for(int n=0; n<10; ++n)
        std::cout << dis(gen) << ' ';
    std::cout << '\n';
}

Возможный вывод: 

1 1 6 5 2 2 5 5 6 2
Источник — «http://ru.cppreference.com/mwiki/index.php?title=cpp/numeric/random/uniform_int_distribution&oldid=28228»