Pandas5

Department Highest Salary

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+
+import pandas as pd
+
+def department_highest_salary(employee: pd.DataFrame, department: pd.DataFrame) -> pd.DataFrame:
+    df = employee.merge(department, left_on='departmentId', right_on='id') #creating the dataframe
+    result = df[df.salary == df.groupby('name_y')['salary'].transform('max')][['name_y', 'name_x', 'salary']] #highest salary
+    result.columns = ['Department', 'Employee', 'Salary'] #renaming the columns
+    return result

Rank Scores

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+
+import pandas as pd
+
+def order_scores(scores: pd.DataFrame) -> pd.DataFrame:
+    # Rank, including the duplicates
+    scores['rank'] = scores['score'].rank(method='dense', ascending=False).astype(int)
+
+    # Sort 
+    scores = scores.sort_values(by='score', ascending=False)
+
+    return scores[['score', 'rank']]