How to Implement a Snake Sort Pick Path in Excel Using ISEVEN

Description:
Ever stared at a warehouse pick list in Excel and watched a picker zig-zag back and forth across aisles wasting steps? This tutorial walks through building a snake sort pick path so the route flows up one aisle and down the next without backtracking. By the end, you will be able to add an ISEVEN helper column and a two-level sort that turns a raw pick list into a serpentine walking order.

Covered inside:
→ Setting up the Sort Key helper in cell D2 across the A1 to D11 range
→ Writing the ISEVEN formula that flips Position to a negative for even aisles
→ Filling the formula down using the fill handle when the table does not auto-copy
→ Spot-checking that even aisles like aisle two with position five show as negative five
→ Configuring a two-level Sort dialog with Aisle then Sort Key, both ascending
→ Verifying the final Pallet sequence from P101 through P401 reads as one zig-zag route

Would you have used ISEVEN here, or reached for MOD instead? Drop your version of the helper formula in the comments, especially if you handle aisles that skip numbers.

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