std::uniform_int_distribution

来自cppreference.com

This page has been machine-translated from the English version of the wiki using Google Translate.

The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here.

Click here for the English version of this page

 
C++
 
Numerics的图书馆
常见的数学函数
浮点环境
复数
数字阵列
伪随机数生成
编译时合理的算法 （C++11）
通用的数值运算
Original:
Generic numeric operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
iota（C++11）
accumulate
inner_product
adjacent_difference
partial_sum
 
伪随机数生成
发动机和引擎适配器
Original:
Engines and engine adaptors
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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）
发电机
Original:
Generators
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
random_device（C++11）
分布
Original:
Distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
均匀分布
Original:
Uniform distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
uniform_int_distribution（C++11）
uniform_real_distribution（C++11）
generate_canonical（C++11）
伯努里分布
Original:
Bernoulli distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
bernoulli_distribution（C++11）
binomial_distribution（C++11）
negative_binomial_distribution（C++11）
geometric_distribution（C++11）
泊松分布
Original:
Poisson distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
poisson_distribution（C++11）
exponential_distribution（C++11）
gamma_distribution（C++11）
weibull_distribution（C++11）
extreme_value_distribution（C++11）
正态分布
Original:
Normal distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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）
抽样分布
Original:
Sampling distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
discrete_distribution（C++11）
piecewise_constant_distribution（C++11）
piecewise_linear_distribution（C++11）
种子序列
Original:
Seed Sequences
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
seed_seq（C++11）
C库
Original:
C library
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
rand
srand
RAND_MAX
 
std::uniform_int_distribution
成员函数
Original:
Member functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
uniform_int_distribution::uniform_int_distribution
uniform_int_distribution::reset
代
Original:
Generation
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
uniform_int_distribution::operator()
特性
Original:
Characteristics
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
uniform_int_distribution::a
uniform_int_distribution::b
uniform_int_distribution::param
uniform_int_distribution::min
uniform_int_distribution::max
非成员函数
Original:
Non-member functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
operator==
operator!=
operator<<
operator>>
 
Defined in header <random>
template< class IntType = int >
class uniform_int_distribution;
 （C++11 起）
产生随机整数值i，均匀分布的，即，根据离散概率函数分布在闭区间[a, b]
Original:
Produces random integer values i, uniformly distributed on the closed interval [a, b], that is, distributed according to the discrete probability function
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
P(i|a,b) =
1
b − a + 1
.

目录

[编辑] 会员类型

会员类型
Original:
Member type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
 Definition
result_type IntType
param_type
的类型的参数集，未指定
Original:
the type of the parameter set, unspecified
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[编辑] 成员函数
构建新的分配
Original:
constructs new distribution
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

（公共成员函数） [edit]
复位内部状态的分布
Original:
resets the internal state of the distribution
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

（公共成员函数） [edit]
代
Original:
Generation
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
生成下一个随机数的分布
Original:
generates the next random number in the distribution
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

（公共成员函数） [edit]
特性
Original:
Characteristics
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
返回“一”分布参数（最小值）
Original:
returns the a distribution parameter (minimum value)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

（公共成员函数） [edit]
返回“B”分布参数（最大值）
Original:
returns the b distribution parameter (maximum value)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

（公共成员函数） [edit]
获取或设置的分布参数对象
Original:
gets or sets the distribution parameter object
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

（公共成员函数） [edit]
返回的最低可能产生的价值
Original:
returns the minimum potentially generated value
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

（公共成员函数） [edit]
返回的最大潜在价值
Original:
returns the maximum potentially generated value
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

（公共成员函数） [edit]

[编辑] 非成员函数
比较两个分布对象
Original:
compares two distribution objects
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

（函数） [edit]
执行流输入和输出的伪随机数分布
Original:
performs stream input and output on pseudo-random number distribution
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

（函数） [edit]

[编辑] 为例

该程序模拟掷6面骰子.
Original:
This program simulates throwing 6-sided dice.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

#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';
}

Possible output: 

1 1 6 5 2 2 5 5 6 2
来自“http://zh.cppreference.com/mwiki/index.php?title=cpp/numeric/random/uniform_int_distribution&oldid=27293”