Python - 按给定顺序连接字符串

给定一个字符串列表和顺序列表，按特定顺序执行字符串连接。

Input : test_list = [“best”, “Gfg”, “for”, “is”], sort_order = [1, 3, 0, 2] 
Output : Gfgisbestfor 
Explanation : Combined as per order of indices.
Input : test_list = [“best”, “Gfg”], sort_order = [1, 0] 
Output : Gfgbest 
Explanation : Combined as per order of indices. 
 

方法#1：使用循环

在此，我们在循环中迭代 order 元素，并以相似的顺序执行相似索引的字符串的串联。

Python3

# Python3 code to demonstrate working of 
# Concatenate Strings in Order
# Using loop
  
# initializing list
test_list = ["best", "Gfg", "for", "is", "geeks"]
  
# printing original list
print("The original list is : " + str(test_list))
  
# initializing join order 
sort_order = [1, 3, 0, 2, 4]
  
res = ''
for ordr in sort_order:
      
    # concatenating by order 
    res += test_list[ordr]
  
# printing result 
print("Ordered concatenation : " + str(res))

输出

The original list is : ['best', 'Gfg', 'for', 'is', 'geeks']
Ordered concatenation : Gfgisbestforgeeks

方法 #2：使用 join() + 列表理解

在这里，我们使用 join() 执行连接任务，列表理解用于顺序迭代。

蟒蛇3

# Python3 code to demonstrate working of 
# Concatenate Strings in Order
# Using join() + list comprehension
  
# initializing list
test_list = ["best", "Gfg", "for", "is", "geeks"]
  
# printing original list
print("The original list is : " + str(test_list))
  
# initializing join order 
sort_order = [1, 3, 0, 2, 4]
  
# join() performs concatenation
res = ''.join([test_list[ordr] for ordr in sort_order])
  
# printing result 
print("Ordered concatenation : " + str(res))

输出

The original list is : ['best', 'Gfg', 'for', 'is', 'geeks']
Ordered concatenation : Gfgisbestforgeeks