Python - 按总字符对矩阵进行排序

给定一个字符串矩阵，按总数据排序，即每行的总字符数。

Input : test_list = [[“Gfg”, “is”, “Best”], [“Geeksforgeeks”, “Best”], [“ILvGFG”]] 
Output : [[‘ILvGFG’], [‘Gfg’, ‘is’, ‘Best’], [‘Geeksforgeeks’, ‘Best’]] 
Explanation : 6 < 11 < 17 total characters respectively after sorting.

Input : test_list = [[“Geeksforgeeks”, “Best”], [“ILvGFG”]] 
Output : [[‘ILvGFG’], [‘Geeksforgeeks’, ‘Best’]] 
Explanation : 6 < 17 total characters respectively after sorting. 
 

方法 #1：使用 sort() + len() + sum()

在这里，我们使用 sort() 执行排序任务，使用 len() 和 sum() 完成获取总字符数的任务。

Python3

# Python3 code to demonstrate working of
# Sort Matrix by total characters
# Using sort() + len() + sum()
  
  
def total_chars(row):
  
    # getting total characters
    return sum([len(sub) for sub in row])
  
  
# initializing list
test_list = [["Gfg", "is", "Best"], ["Geeksforgeeks", "Best"],
             ["GFg", "4", "good"], ["ILvGFG"]]
  
# printing original list
print("The original list is : " + str(test_list))
  
# calling utility fnc
test_list.sort(key=total_chars)
  
# printing result
print("Sorted results : " + str(test_list))

输出：

The original list is : [[‘Gfg’, ‘is’, ‘Best’], [‘Geeksforgeeks’, ‘Best’], [‘GFg’, ‘4’, ‘good’], [‘ILvGFG’]]
Sorted results : [[‘ILvGFG’], [‘GFg’, ‘4’, ‘good’], [‘Gfg’, ‘is’, ‘Best’], [‘Geeksforgeeks’, ‘Best’]]

方法 #2：使用sorted() + lambda

其中， sorted() 用于获取排序结果， lambda函数用于代替外部函数来获取排序字符串的逻辑。

蟒蛇3

# Python3 code to demonstrate working of 
# Sort Matrix by total characters 
# Using sorted() + lambda
  
# initializing list
test_list = [["Gfg", "is", "Best"], ["Geeksforgeeks", "Best"],
             ["GFg", "4", "good"], ["ILvGFG"]]
  
# printing original list
print("The original list is : " + str(test_list))
  
# sorted() gives sorted result 
# lambda function providing logic
res = sorted(test_list, key = lambda row : sum([len(sub) for sub in row]))
  
# printing result 
print("Sorted results : " + str(res))

输出：

The original list is : [[‘Gfg’, ‘is’, ‘Best’], [‘Geeksforgeeks’, ‘Best’], [‘GFg’, ‘4’, ‘good’], [‘ILvGFG’]] 

Sorted results : [[‘ILvGFG’], [‘GFg’, ‘4’, ‘good’], [‘Gfg’, ‘is’, ‘Best’], [‘Geeksforgeeks’, ‘Best’]]