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Home » Challenges » By Topic » Custom Grouping » Page 3

Custom Grouping

Challenges related to custom data grouping.

Pivot Using Suffix Headers
Posted in
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  • ExcelBI Excel Challenges
  • Pivot & Unpivot
  • ⭐️ Beginner

Pivot Using Suffix Headers

Challenge No. 413: Pivot the given data with headers suffixed with 1, 2.
Solved using: Python.

September 24, 2025July 23, 2025
Department Totals and Summary
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  • Custom Grouping
  • ExcelBI Power Query Challenges
  • ⭐️⭐️ Easy

Department Totals and Summary

Challenge No. 165: Insert the total row containing count of employees and sum of salary at the bottom of each dept groups.
Solved using: R.

September 20, 2025July 14, 2025
Winning Numbers Weekly Range
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  • Custom Grouping
  • ExcelBI Power Query Challenges
  • Missing Values
  • ⭐️⭐️⭐️⭐️ Advanced

Winning Numbers Weekly Range

Challenge No. 161: For each group, find the maximum occurring Winning numbers within a period of 7 weeks .
Solved using: Python in Excel.

September 17, 2025July 14, 2025
Encrypt Words with Tri Numeral Cipher
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  • ExcelBI Excel Challenges
  • ⭐️⭐️ Easy

Encrypt Words with Tri Numeral Cipher

Challenge No. 397: Tri Numeral Alphabet Cipher – English alphabets are divided into groups containing 3 alphabets each and last group contain only 2 alphabets i.
Solved using: Python in Excel.

September 16, 2025July 23, 2025
Log Changes Within Group
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  • Date & Time Handling
  • ExcelBI Power Query Challenges
  • ⭐️⭐️⭐️ Intermediate

Log Changes Within Group

Challenge No. 157: Except the Group column, for every other column, log the value within a group if value changes.
Solved using: R.

September 13, 2025July 14, 2025
Boundary Rows per Threshold
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  • ExcelBI Power Query Challenges
  • ⭐️⭐️⭐️⭐️ Advanced

Boundary Rows per Threshold

Challenge No. 146: For a group –
List the last row where value < Threshold and also list the first row where value > Threshold
If more than one row meets the criterion, then capture all those rows.
Solved using: Python in Excel.

September 2, 2025July 14, 2025
Split Group and Track Running
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  • ExcelBI Power Query Challenges
  • ⭐️⭐️ Easy

Split Group and Track Running

Challenge No. 144: Divide the data set for a group in 2 halves.
Solved using: Python in Excel.

August 31, 2025July 14, 2025
Map Groups to Company
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  • ExcelBI Power Query Challenges
  • ⭐️⭐️⭐️ Intermediate

Map Groups to Company

Challenge No. 137: Generate result table on the basis of 2 problem tables.
Solved using: Python in Excel.

August 25, 2025July 14, 2025
Detect Common Groups by ID
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  • ExcelBI Power Query Challenges
  • ⭐️⭐️⭐️ Intermediate

Detect Common Groups by ID

Challenge No. 136: Find the common groups on the basis of common IDs.
Solved using: R.

August 24, 2025July 14, 2025
Find Longest Consecutive Sequence
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  • ExcelBI Excel Challenges
  • ⭐️⭐️ Easy

Find Longest Consecutive Sequence

Challenge No. 347: List the largest group of consecutive numbers in each column.
Solved using: R.

August 22, 2025July 21, 2025

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  • By Difficulty
    • ⭐️ Beginner
    • ⭐️⭐️ Easy
    • ⭐️⭐️⭐️ Intermediate
    • ⭐️⭐️⭐️⭐️ Advanced
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    • ⭐️⭐️⭐️⭐️⭐️⭐️Complex
  • By Topic
    • Advanced Mathematics Problem
    • Aggregation & Summarization
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    • Column Transformation
    • Custom Grouping
    • Data Cleaning
    • Data Transformation
    • Date & Time Handling
    • Financial Problems
    • Indexing & Ranking
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    • Pivot & Unpivot
    • Text Processing
  • By Creator
    • Omid Challenges
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  • Books
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