feat: add pandas solution to lc problem: No.0181 (doocs#1865)

Author: nrhitik

solution/0100-0199/0181.Employees Earning More Than Their Managers/README.md

@@ -81,4 +81,16 @@ FROM
 WHERE e1.salary > e2.salary;
 ```
 
+```python
+import pandas as pd
+
+
+def find_employees(employee: pd.DataFrame) -> pd.DataFrame:
+    df = employee.merge(right=employee, how="left", left_on="managerId", right_on="id")
+    emp = df[df["salary_x"] > df["salary_y"]]["name_x"]
+
+    return pd.DataFrame({"Employee": emp})
+
+```
+
 <!-- tabs:end -->

solution/0100-0199/0181.Employees Earning More Than Their Managers/README_EN.md

@@ -77,4 +77,16 @@ FROM
 WHERE e1.salary > e2.salary;
 ```
 
+```python
+import pandas as pd
+
+
+def find_employees(employee: pd.DataFrame) -> pd.DataFrame:
+    df = employee.merge(right=employee, how="left", left_on="managerId", right_on="id")
+    emp = df[df["salary_x"] > df["salary_y"]]["name_x"]
+
+    return pd.DataFrame({"Employee": emp})
+
+```
+
 <!-- tabs:end -->

solution/0100-0199/0181.Employees Earning More Than Their Managers/Solution.py

@@ -0,0 +1,8 @@
+import pandas as pd
+
+
+def find_employees(employee: pd.DataFrame) -> pd.DataFrame:
+    df = employee.merge(right=employee, how="left", left_on="managerId", right_on="id")
+    emp = df[df["salary_x"] > df["salary_y"]]["name_x"]
+
+    return pd.DataFrame({"Employee": emp})