find the median of all keys in a map in python

To find the median of all keys in a Python dictionary (also known as a map), we first need to extract all the keys from the dictionary and store them in a list. We can then sort this list of keys using the built-in sorted() function. Once we have a sorted list of keys, we can calculate the median by checking if the list has an odd or even number of elements, and then returning the middle value(s).

Here's the code to accomplish this:


main.py
my_dict = {'a':1, 'b':2, 'c':3, 'd':4, 'e':5}

# Extract all keys and store in a list
keys_list = list(my_dict.keys())

# Sort the list of keys
sorted_keys_list = sorted(keys_list)

# Calculate the median
n = len(sorted_keys_list)
if n % 2 == 0:
    # If there are an even number of elements, take the average of the middle two values
    median = (sorted_keys_list[(n//2)-1] + sorted_keys_list[n//2]) / 2
else:
    # If there are an odd number of elements, simply return the middle value
    median = sorted_keys_list[n//2]

print("Median key:", median)
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This code will output: Median key: c since 'c' is the middle element in the sorted list of keys.

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