Omid - Challenge 191

data-challenges
advanced-exercises
🔰 Question Result ID MN ABC QW T Part 1
Published

March 24, 2026

Illustration for Omid - Challenge 191

Challenge Description

🔰 Question Result ID MN ABC QW T Part 1

Solutions

library(tidyverse)
library(readxl)

path = "files/CH-191Column Splitting.xlsx"
input = read_excel(path, range = "B2:B7")
test  = read_excel(path, range = "D2:F7")

result = input %>% 
  extract(ID, into = c("Part 1", "Separator", "Part 2"), "([A-Za-z0-9]+)([^A-Za-z0-9])(.*)")
all.equal(result, test, check.attributes = FALSE)
# [1] TRUE

  • Logic:

    • Reads the workbook ranges needed for the challenge

  • 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
import re

path = "CH-191Column Splitting.xlsx"

input = pd.read_excel(path, usecols="B", skiprows=1, nrows=6)
test = pd.read_excel(path, usecols="D:F", skiprows=1, nrows=6).astype(str)

input[['Part 1', 'Separator', 'Part 2']] = input.iloc[:, 0].str.extract(r"([A-Za-z0-9]+)([^A-Za-z0-9])(.*)").astype(str)
result = input[['Part 1', 'Separator', 'Part 2']]
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.