Rounding dataframe values to nearest integer

Problem

Given a dataframe with a column of floats, write a function to round the values in this column to the nearest integer.
Input:
df = pd.DataFrame({'values': [1.5, 2.2, 3.7, 4.1, 5.9]})
Output:
df['values'] = df['values'].apply(round_to_int)
df
values
2
3
4
5
6

Solution

This solution is in Python. Our A.I. can create solutions in multiple languages.

kayakane

import pandas as pd

def round_to_int(x):
    return int(round(x))

df = pd.DataFrame({'values': [1.5, 2.2, 3.7, 4.1, 5.9]})
df['values'] = df['values'].apply(round_to_int)
print(df)

# The solution is optimal because it is the most efficient way to round the values in the column.