need dynamic array formula help

S

Scott R

Active Member
Joined
Feb 20, 2002
Messages
493
Office Version
  1. 365
Platform
  1. Windows
I'd like a formula in E2 that spills to E2:E9 that uses helper data in A:C which creates a sequence (2,3,4 from A2:B2, 1 from A3:B3, etc.)

startstopcountoutput
2432
1113
5514
2431
5
2
3
4
 

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How about
Excel Formula: 
=LET(data,A2:C5,DROP(REDUCE("",SEQUENCE(ROWS(data)),LAMBDA(x,y,VSTACK(x,SEQUENCE(INDEX(data,y,3),,INDEX(data,y,1))))),1))
 
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Solution
Fluff said:
How about
Excel Formula: 
=LET(data,A2:C5,DROP(REDUCE("",SEQUENCE(ROWS(data)),LAMBDA(x,y,VSTACK(x,SEQUENCE(INDEX(data,y,3),,INDEX(data,y,1))))),1))
Click to expand...
Outstanding. Glad to know it was possible.
 
Upvote 0
One option:
Excel Formula: 
=DROP(REDUCE("",A2:A5&"|"&C2:C5,LAMBDA(a,b,VSTACK(a,SEQUENCE(TEXTAFTER(b,"|"),1,TEXTBEFORE(b,"|"))))),1)
 
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Glad we could help & thanks for the feedback.
 
Upvote 0
Cubist said:
One option:
Excel Formula: 
=DROP(REDUCE("",A2:A5&"|"&C2:C5,LAMBDA(a,b,VSTACK(a,SEQUENCE(TEXTAFTER(b,"|"),1,TEXTBEFORE(b,"|"))))),1)
Click to expand...
Thanks. Both of these meaty solutions provide great training!
 
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