Omid - Challenge 252

data-challenges
advanced-exercises
🔰 Result Question Factor Importance F1 F2 F3 F4
Published

March 24, 2026

Illustration for Omid - Challenge 252

Challenge Description

🔰 Result Question Factor Importance F1 F2 F3 F4

Solutions

library(tidyverse)
library(readxl)

path = "files/200-299/252/CH-252 Switching Value.xlsx"
input = read_excel(path, range = "C2:D9")
test  = read_excel(path, range = "F2:G9")

result = input %>%
  mutate(Importance = recode(Importance,
                             "Very low" = 1,
                             "Low" = 2,
                             "Moderate" = 3,
                             "High" = 4,
                             "Very high" = 5))

all.equal(result, test)
#> [1] TRUE

  • Logic:

    • Reads the workbook ranges needed for the challenge

    • Builds the intermediate columns that drive the final result

  • Strengths:

    • The R solution stays close to the workbook rule and keeps the transformation compact.

  • Areas for Improvement:

    • The code assumes the sheet structure and source ranges remain stable.

  • Gem:

    • The strongest part of the solution is choosing the right intermediate representation before shaping the final output.
import pandas as pd

path = "200-299/252/CH-252 Switching Value.xlsx"
input = pd.read_excel(path, usecols="C:D", skiprows=1, nrows=8)
test = pd.read_excel(path, usecols="F:G", skiprows=1, nrows=8).rename(columns=lambda x: x.replace('.1', ''))

result = input.copy()
result['Importance'] = result['Importance'].str.strip().replace({
    "Very low": 1, "Low": 2, "Moderate": 3, "High": 4, "Very high": 5
})

print(result.equals(test)) # True

  • Logic:

    • Reads the workbook ranges needed for the challenge

  • Strengths:

    • The Python version follows the same rule in a direct dataframe-oriented implementation.

  • Areas for Improvement:

    • The code assumes the workbook layout remains stable, so any sheet redesign would require small adjustments.

  • Gem:

    • The implementation stays close to the original workbook rule instead of adding unnecessary abstraction.

Difficulty Level

This task is moderate:

  • The business rule is readable, but the workbook still requires careful implementation to reach the expected layout.