Ruby Array sample()用法及代碼示例

Array＃sample()：sample()是一個Array類方法，它從數組中返回一個隨機元素或n個隨機元素。

用法：Array.sample()

參數：數組

返回：數組中的一個隨機元素或n個隨機元素。

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"

輸出：

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"

輸出：

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

sample() method form : ["dog"]

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

相關用法

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