Excel Formula Challenge: List repeated Alphabets from text string

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In this video, we breakdown the formula to extract a unique list of repeated aalphabets from a Text string.

00:00 Introduction
00:30 Problem description
01:50 Concept/Solution description
04:45 Solution
09:30 Make formula Spill

Link to Challenge:

Link to Excel Workbook:
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Thanks for the video, Excelmoments. Great explanation sir. Blessings and keep the good work!

JohnVergaraD
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It is certainly a very elegant formula. It has overwhelming logic. Thank you Victor.

IvanCortinas_ES
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Another great video Victor, so well explained.

stevereed
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Elegant? No kidding. I think I finally learned how to take a column of lookup formulas and write it in one cell using Map. I didn’t really understand Map before. I can’t wait to give it a try tomorrow morning…Thank you Sir! 👍

KevinPGA
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Thank you for the explanation sir,
The logic and the use of functions are well explained....great learning from your videos.

sunnybaggu
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Nice train of thought Victor... love this video... Will practice it tomorrow morning. Keep these one single cell solution challenges coming. Take care

jazzista
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Very very explicit video. Great approach. I definitely would've approached it a different way. But I like this especially cos you used the map and lambda. Thanks for sharing

nonoobott
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Great video and I like your explanation of map at the end 👍. My approach would be to stack the unique and distinct values, then get the unique of the stack, then use textjoin and map.

martyc
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Dear Momoh,
A harder way to get the same result:
=IFERROR(MAP(A2:A10, LAMBDA(x, LET(a, MID(x, SEQUENCE(LEN(x)), 1), TEXTJOIN(", 🤗

JoseAntonioMorato
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Dear Victor, I really love your formula it's working fine, In between I have two small additional queries: <1> For example if my data says "Sunil Anil" I want to find the duplicate of "nil" (Here 3 characters). How can I find it?
<2>How to find the above duplicate of 3 characters from the entire data set (All cell range $A$1:$D$50)
Kindly help me, Thanks

sunilpinto
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can you help me, why is this formula not working please...

=MAP(A2:A10, LAMBDA(x,
LET(a, MID(x, SEQUENCE(LEN(x)), 1),
b, FILTER(a, COUNTIF(a, a)>1),
c, CONCAT(UNIQUE(b)&", "), c)))

sunnybaggu