Python – Sort Matrix by Maximum String Length

When it is required to sort matrix by maximum string length, a method is defined that takes a list as parameter and uses list comprehension and the ‘max’ and ‘len’ methods to determine the result.

Below is a demonstration of the same −

Example

 Live Demo

def max_length(row):    return max([len(element) for element in row]) my_matrix = [['pyt', 'fun'], ['python'], ['py', 'cool'], ['py', 'ea']] print("The matrix is :") print(my_matrix ) my_matrix .sort(key=max_length) print("The result is :") print(my_matrix )

Output

The matrix is : [['pyt', 'fun'], ['python'], ['py', 'cool'], ['py', 'ea']] The result is : [['py', 'ea'], ['pyt', 'fun'], ['py', 'cool'], ['python']]

Explanation

• A method named ‘max_length’ is defined that takes a list as a parameter, and gets the length of every element and uses ‘max’ to get the length of longest element.

• Outside the method, a list of list is defined and is displayed on the console.

• The list is sorted by specifying the method which was previously defined.

• This is the output that is displayed on the console.