Ruby Array repeated_combination()用法及代码示例

Array＃repeated_combination()：repeated_combination()是一种Array类方法，它返回数组中元素长度n的所有重复组合，然后返回数组本身。

用法：Array.repeated_combination()

参数：数组

返回：数组中元素长度为n的所有重复组合，然后返回数组本身。f。

示例1:

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

输出：

repeated_combination() method form : [[18, 18], [18, 22], [18, 33], [18, nil], [18, 5], [18, 6], [22, 22], [22, 33], [22, nil], [22, 5], [22, 6], [33, 33], [33, nil], [33, 5], [33, 6], [nil, nil], [nil, 5], [nil, 6], [5, 5], [5, 6], [6, 6]]

repeated_combination() method form : [[1], [4], [1], [1], [88], [9]]

repeated_combination() method form : []

示例2:

# Ruby code for repeated_combination() method 
   
# declaring array 
a = ["abc", "nil", "dog"] 
   
# declaring array 
c = [nil] 
   
# declaring array 
b = ["cow", nil, "dog"] 
   
# repeated_combination method example 
puts "repeated_combination() method form : 
     #{a.repeated_combination(2).to_a}\n\n" 
   
puts "repeated_combination() method form : 
     #{b.repeated_combination(1).to_a}\n\n" 
   
puts "repeated_combination() method form : 
     #{c.repeated_combination(4).to_a}\n\n"

输出：

repeated_combination() method form : [["abc", "abc"], ["abc", "nil"], ["abc", "dog"], ["nil", "nil"], ["nil", "dog"], ["dog", "dog"]]

repeated_combination() method form : [["cow"], [nil], ["dog"]]

repeated_combination() method form : [[nil, nil, nil, 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 repeated_combination() 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。