红宝石 |数组 uniq!()函数

Array#uniq!() : uniq!()是一个 Array 类方法，它从数组中删除重复元素，并且仅当数组中有重复元素时才返回。

Syntax: Array.uniq!()

Parameter: Array

Return: removes duplicate elements from the array.

示例 #1：

# Ruby code for uniq!() 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]
  
# uniq! method example
puts "uniq!() method form : #{a.uniq!()}\n\n"
  
puts "uniq!() method form : #{b.uniq!()}\n\n"
  
puts "uniq!() method form : #{c.uniq!()}\n\n"

输出 ：

uniq!() method form : 

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

uniq!() method form : 

示例 #2：

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

输出 ：

uniq!() method form : 

uniq!() method form : 

uniq!() method form : ["cat", nil]