Ruby Array sample()用法及代码示例

Array＃sample()：sample()是一个Array类方法，它从数组中返回一个随机元素或n个随机元素。

用法：Array.sample()

参数：数组

返回：数组中的一个随机元素或n个随机元素。

示例1:

# Ruby code for sample() method 
  
# declaring array 
a = [18, 22, 33, nil, 5, 6] 
  
# declaring array 
b = [1, 4, 1, 1, 88, 9] 
  
# declaring array 
c = [18, 22, 50, 6] 
  
# sample method example 
puts "sample() method form : #{a.sample(2)}\n\n"
  
puts "sample() method form : #{b.sample(1)}\n\n"
  
puts "sample() method form : #{c.sample(3)}\n\n"

输出：

sample() method form : [6, nil]

sample() method form : [4]

sample() method form : [18, 22, 6]

示例2:

# Ruby code for sample() method 
  
# declaring array 
a = ["abc", "nil", "dog"] 
  
# declaring array 
c = ["cat", nil] 
  
# declaring array 
b = ["cow", nil, "dog"] 
  
# sample method example 
puts "sample() method form : #{a.sample(2)}\n\n"
  
puts "sample() method form : #{b.sample(1)}\n\n"
  
puts "sample() method form : #{c.sample(3)}\n\n"

输出：

sample() method form : ["dog", "abc"]

sample() method form : ["dog"]

sample() method form : ["cat", nil]

相关用法

注：本文由纯净天空筛选整理自mayank5326大神的英文原创作品 Ruby | Array sample() function。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。