Python: Find the key of the maximum, minimum value in a dictionary

Last update on December 21 2024 07:28:46 (UTC/GMT +8 hours)

Write a Python program to find the key of the maximum value in a dictionary.

• Use max() with the key parameter set to dict.get() to find and return the key of the maximum value in the given dictionary.
• Use min() with the key parameter set to dict.get() to find and return the key of the minimum value in the given dictionary.

Sample Solution:

Python Code:

# Define a function 'test' that takes a dictionary 'd'.
# The function returns the keys of the maximum and minimum values in the dictionary.
def test(d):
    # Use the 'max' and 'min' functions to find the key corresponding to the maximum and minimum values in the dictionary.
    # The 'key' argument specifies that the key should be determined based on the values using 'd.get'.
    return max(d, key=d.get), min(d, key=d.get)

# Create a dictionary 'students' with key-value pairs.
students = {
    'Theodore': 19,
    'Roxanne': 22,
    'Mathew': 21,
    'Betty': 20
}

# Print the original dictionary.
print("\nOriginal dictionary elements:")
print(students)

# Call the 'test' function to find the keys of the maximum and minimum values in the 'students' dictionary.
print("\nFinds the key of the maximum and minimum value of the said dictionary:")
print(test(students))

Sample Output:

Original dictionary elements:
{'Theodore': 19, 'Roxanne': 22, 'Mathew': 21, 'Betty': 20}

Finds the key of the maximum and minimum value of the said dictionary:
('Roxanne', 'Theodore')

Flowchart:

Python Code Editor:

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