def quicksort(arr):
if len(arr) <= 1:
return arr
pivot = arr[len(arr) // 2]
left = [x for x in arr if x < pivot]
middle = [x for x in arr if x == pivot]
right = [x for x in arr if x > pivot]
return quicksort(left) + middle + quicksort(right)import pandas as pd
data = {'Name': ['Alice', 'Bob', 'Charlie', 'David', 'Eva'],
'Age': [24, 27, 22, 32, 29]}
df = pd.DataFrame(data)
# Age 열의 평균 계산
mean_age = df['Age'].mean()
print(f"Average age: {mean_age}")