Ruby Array class join()用法及代碼示例

join()是一個Array類方法，該方法返回通過將數組的每個元素轉換為由給定分隔符分隔的字符串而創建的字符串。

用法：Array.join()

參數：數組
分隔符

返回：數組元素的連接值

範例1：

# Ruby code for join() method 
  
# declaring array 
a = [18, 22, 33, nil, 5, 6] 
  
# declaring array 
b = [1, 4, 1, 1, 88, 9] 
  
# declaring array 
c = [18, 22, nil, nil, 50, 6] 
  
# join 
puts "join:#{a.join("4")}\n\n"
  
# join 
puts "join:#{b.join('-')}\n\n"
  
# join 
puts "join:#{c.join("*")}\n\n"

輸出：

join:1842243344546

join:1-4-1-1-88-9

join:18*22***50*6

範例2：

# Ruby code for join() method 
  
# declaring array 
a = ["abc", "nil", "dog"] 
  
# declaring array 
b = ["cow", nil, "dog"] 
  
# declaring array 
c = ["cat", nil, nil] 
  
# join 
puts "join:#{a.join("4")}\n\n"
  
# join 
puts "join:#{b.join('-')}\n\n"
  
# join 
puts "join:#{c.join("*")}\n\n"

輸出：

join:abc4nil4dog

join:cow--dog

join:cat**

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