Python: Sort a list of lists by length and value

Last update on April 19 2025 13:02:07 (UTC/GMT +8 hours)

Sort List of Lists by Length and Value

Write a Python program to sort a given list of lists by length and value.

Visual Presentation:

Sample Solution:

Python Code:

# Define a function 'sort_sublists' that sorts a list of lists by length and values
def sort_sublists(input_list):
    input_list.sort()  # Sort the list by sublist contents
    input_list.sort(key=len)  # Sort the list by the length of sublists
    return input_list

# Create a list 'list1' containing sublists of numbers
list1 = [[2], [0], [1, 3], [0, 7], [9, 11], [13, 15, 17]]

# Print a message indicating the original list
print("Original list:")
# Print the contents of 'list1'
print(list1)

# Print a message indicating the sorted list of lists by length and values
print("\nSort the list of lists by length and value:")
# Call the 'sort_sublists' function with 'list1' and print the result
print(sort_sublists(list1))

Sample Output:

Original list:
[[2], [0], [1, 3], [0, 7], [9, 11], [13, 15, 17]]

Sort the list of lists by length and value:
[[0], [2], [0, 7], [1, 3], [9, 11], [13, 15, 17]]

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to sort a list of lists by the sum of its elements.
• Write a Python program to sort lists of lists by their maximum value.
• Write a Python program to reverse sort a list of lists by length.
• Write a Python program to order nested lists by ascending and descending order.

Go to:

• Python Data Type List Exercises Home ↩
• Python Exercises Home ↩

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