Python: Compare two unordered lists

Last update on April 21 2025 12:57:30 (UTC/GMT +8 hours)

36. Compare Two Unordered Lists (Not Sets)

Write a Python program to compare two unordered lists (not sets).

Sample Solution:

Python Code:

# Import the Counter class from the collections module
from collections import Counter

# Define a function 'compare_lists' that takes two lists 'x' and 'y' as arguments
def compare_lists(x, y):
    # Compare whether the counts of elements in 'x' and 'y' are equal using Counter
    return Counter(x) == Counter(y)

# Create two lists 'n1' and 'n2' containing integer values
n1 = [20, 10, 30, 10, 20, 30]
n2 = [30, 20, 10, 30, 20, 50]

# Call the 'compare_lists' function with 'n1' and 'n2' as arguments and print the result
print(compare_lists(n1, n2))

Sample Output:

False

Flowchart:

For more Practice: Solve these Related Problems:

Write a Python program to compare two lists element-wise and return True if they contain the same elements with the same frequencies, regardless of order.
Write a Python program to use collections.Counter to determine if two lists are equivalent without considering order.
Write a Python program to implement a function that checks if two lists are equal by sorting them and comparing the sorted versions.
Write a Python program to compare two lists using a dictionary to count occurrences and then determine if they are identical in content.

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