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Crossword

Vector 17:2, page 32

competitions and puzzles

Transcribed from the printed issue; not yet reviewed. Read it in the PDF of the issue, page 32

The empty 12 by 12 crossword grid, numbered 1 to 42

Across

  1. The first element of A, as a scalar
  2. The values of x such that (∧/(⍳⍴F)∊x)∧((⍴x)=⍴F)∧(1↓F[x])∧.≥¯1↓F[x]
  3. Resume the function that called the currently suspended function
  4. The rank of the shape of F (or is it the shape of the rank?)
  5. (N>L)-N<L
  6. ⍉
  7. B÷|B+B=0
  8. Clear the state indicator
  9. (~X∊DG)/X
  10. 1⍲B
  11. Subtract from the absolute value of M ...
  12. Is (non-nested) A numeric?
  13. (12↓V),12↑V
  14. The opposite of '⌈/'
  15. M, all strung out
  16. ∨/,Z1=20
  17. Add the magnitude of K to VM
  18. The product of A and ...
  19. The result of 9 across
  20. ((⍴B)=+/B)⍴⎕IO for bit vector B
  21. e to the power NVP, times five
  22. NX-1|NX
  23. Inverse of +\V for vector V
  24. The sin of one radian
  25. (NE+1)-⍳NE in origin 1
  26. Assuming V[]←0 and ∧/I∊⍳⍴V, do V←(⍳⍴V)∊I
  27. Go to the line labelled L1

Down

  1. T×0
  2. +\RR=RR for vector RR in origin 1
  3. ⍳0 if AE is numeric; ' ' if AE is character
  4. ⎕NL 3
  5. Multiply alternate elements of A, whose shape is PTB, by the two values in M
  6. ⍒S without using ⍒
  7. 10-FLEX×⌊10÷FLEX
  8. Branch to the line labelled P if D is positive, to Z if zero, to N if negative
  9. IS the answer obvious?
  10. ((SE≠0)>SE∊K)/SE
  11. -V11-BG
  12. M2 is not an element of ...
  13. 0=(M[;1]∧N[;1])-(M[;2]∧N[;2]) for two-column matrices M and N
  14. The sum of all but the first X elements of I, but no less than zero
  15. e+e
  16. ''⍴⍋V
  17. (B×B)*.5
  18. -A
  19. Pi less than 5
  20. ⌽(-N)↓L
  21. ((V0/⍳⍴V0),⎕IO+⍴V0)[⎕IO]
  22. V1 gets ...
  23. MAT, less one dimension

Solution to Crossword in 17.1

The completed 12 by 12 crossword grid from Vector 17.1, without clue numbers, filled with APL symbols, names and digits; row 1 reads ∧, then ⍳ B ⌊ D, then ( 1 | A ), and the bottom row reads ? 2 5, then ( I + 1 ) * - N