Seasonal Scoop Filter & Sort

It’s summer, and you only want to feature seasonal ice-cream flavors on the website. Given a CSV of every flavor, filter out only those marked “Yes” under Seasonal, convert their names to UPPERCASE, and sort them alphabetically. Use Vim’s global commands and simple edits—no heavy regex magic needed.

challenge.txt :set list

Start

 1Flavor,Price,Stock,Scoop_Size,Seasonal
 2Vanilla,2.50,120,Single,Yes
 3Strawberry,3.00,80,Double,No
 4Mint Chip,2.75,50,Single,Yes
 5Chocolate,2.50,200,Double,Yes
 6Cookies & Cream,3.25,0,Single,No
 7Pistachio,3.50,40,Single,Yes

Goal

 1CHOCOLATE,2.50,200,Double,Yes
 2MINT CHIP,2.75,50,Single,Yes
 3PISTACHIO,3.50,40,Single,Yes
 4VANILLA,2.50,120,Single,Yes

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