Given a matrix, perform row sort basis on the maximum length of the string in it.
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.
Method #1 : Using sort() + len() + max()
In this, inplace sorting is performed using sort(), len() and max() compute the maximum length of the string in each row to perform the sort.
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)) |
Output:
The original list is : [[‘gfg’, ‘best’], [‘geeksforgeeks’], [‘cs’, ‘rocks’], [‘gfg’, ‘cs’]]
Sorted Matrix : [[‘gfg’, ‘cs’], [‘gfg’, ‘best’], [‘cs’, ‘rocks’], [‘geeksforgeeks’]]
Method #2 : Using sorted() + lambda + max() + len()
In this, we perform task of filtering maximum using lambda function rather than external function. The task of sorting is performed using sorted().
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)) |
Output:
The original list is : [[‘gfg’, ‘best’], [‘geeksforgeeks’], [‘cs’, ‘rocks’], [‘gfg’, ‘cs’]]
Sorted Matrix : [[‘gfg’, ‘cs’], [‘gfg’, ‘best’], [‘cs’, ‘rocks’], [‘geeksforgeeks’]]
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