Python - 按最大字符串长度对矩阵进行排序
给定一个矩阵，根据其中字符串的最大长度执行行排序。
Input : test_list = [[‘gfg’, ‘best’], [‘geeksforgeeks’], [‘cs’, ‘rocks’], [‘gfg’, ‘cs’]]
Output : [[‘gfg’, ‘cs’], [‘gfg’, ‘best’], [‘cs’, ‘rocks’], [‘geeksforgeeks’]]
Explanation : 3 < 4 < 5 < 13, maximum lengths of strings, sorted increasingly.
Input : test_list = [[‘gfg’, ‘best’], [‘cs’, ‘rocks’], [‘gfg’, ‘cs’]]
Output : [[‘gfg’, ‘cs’], [‘gfg’, ‘best’], [‘cs’, ‘rocks’]]
Explanation : 3 < 4 < 5 maximum lengths of strings, sorted increasingly.
方法 #1：使用 sort() + len() + max()
在这种情况下，使用 sort() 执行就地排序，len() 和 max() 计算每行中字符串的最大长度以执行排序。
Python3
# Python3 code to demonstrate working of
# Sort Matrix by Maximum String Length
# Using sort() + len() + max()
def max_len(row):
# getting Maximum length of string
return max([len(ele) for ele in row])
# initializing list
test_list = [['gfg', 'best'], ['geeksforgeeks'],
['cs', 'rocks'], ['gfg', 'cs']]
# printing original list
print("The original list is : " + str(test_list))
# performing sort()
test_list.sort(key=max_len)
# printing result
print("Sorted Matrix : " + str(test_list))Python3
# Python3 code to demonstrate working of
# Sort Matrix by Maximum String Length
# Using sorted() + lambda + max() + len()
# initializing list
test_list = [['gfg', 'best'], ['geeksforgeeks'],
['cs', 'rocks'], ['gfg', 'cs']]
# printing original list
print("The original list is : " + str(test_list))
# performing logic using lambda fnc.
res = sorted(test_list, key=lambda row: max([len(ele) for ele in row]))
# printing result
print("Sorted Matrix : " + str(res))输出：
The original list is : [[‘gfg’, ‘best’], [‘geeksforgeeks’], [‘cs’, ‘rocks’], [‘gfg’, ‘cs’]]
Sorted Matrix : [[‘gfg’, ‘cs’], [‘gfg’, ‘best’], [‘cs’, ‘rocks’], [‘geeksforgeeks’]]
方法 #2：使用sorted() + lambda + max() + len()
在这种情况下，我们使用 lambda函数而不是外部函数来执行过滤最大值的任务。排序的任务是使用 sorted() 来执行的。
蟒蛇3
# Python3 code to demonstrate working of
# Sort Matrix by Maximum String Length
# Using sorted() + lambda + max() + len()
# initializing list
test_list = [['gfg', 'best'], ['geeksforgeeks'],
['cs', 'rocks'], ['gfg', 'cs']]
# printing original list
print("The original list is : " + str(test_list))
# performing logic using lambda fnc.
res = sorted(test_list, key=lambda row: max([len(ele) for ele in row]))
# printing result
print("Sorted Matrix : " + str(res))
输出：
The original list is : [[‘gfg’, ‘best’], [‘geeksforgeeks’], [‘cs’, ‘rocks’], [‘gfg’, ‘cs’]]
Sorted Matrix : [[‘gfg’, ‘cs’], [‘gfg’, ‘best’], [‘cs’, ‘rocks’], [‘geeksforgeeks’]]