Leetcode 177 - Nth Highest Salary - Python Solution | FAANG Interviews

📚 Resources:
- Question: leetcode.com/p...
- Leetcode SQL Playlist: • Leetcode SQL
- Leetcode SQL solution: • LeetCode Medium 177 "N...
- Pandas Schema:
data = [[1, 100], [2, 200], [3, 300]]
employee = pd.DataFrame(data, columns=['Id', 'Salary']).astype({'Id':'Int64', 'Salary':'Int64'})
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import pandas as pd
def nth_highest_salary(employee: pd.DataFrame, N: int) -> pd.DataFrame:
employee.sort_values(by='salary',ascending=True,inplace=True)
employee['rank'] = employee['salary'].rank(method='dense',ascending=False)
df = employee.drop_duplicates(subset='rank',keep='first')
df1 = df[df['rank']==N]
return pd.DataFrame({'getNthHighestSalary({})'.format(N):[None if len(df1)==0 else df1['salary'].iloc[0]]})