Skip to main content

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

3
  • \$\begingroup\$ Using ⎕IO←1: (r↑i/i←⍳r←⍴s)⊂s←⎕ (or s⊂⍨r↑i/i←⍳r←⍴s←⎕ if you upgrade.) \$\endgroup\$
    – Adám
    Commented Jul 4 at 9:02
  • \$\begingroup\$ @Adám. Thanks but your first suggestion results in segments of linear increasing length: a bc def ghij klmno in APL+WIN \$\endgroup\$
    – Graham
    Commented Jul 4 at 12:25
  • \$\begingroup\$ Silly me. (r↑i/i←2*⍳r←⍴s)⊆s←⎕ or s⊂⍨r↑i/i←×⍨⍳r←⍴s←⎕ with ⎕IO←0 \$\endgroup\$
    – Adám
    Commented Jul 4 at 17:07