New Crossword and 20.2 Solution

Transcribed from the printed issue; not yet reviewed. Read it in the PDF of the issue, page 40

New Crossword¶

Across¶

1. Character matrix CL in sorted order according to collating sequence CS
2. A single random number from ⍳X
3. →⎕__ to restart your program
4. ⎕__ to see how much space remains
5. ⎕__ to show number of significant digits being displayed
6. Add vector P to each column of M
7. Index in vector V[⍋V] of V[1]
8. ⎕__ lets you make lightning strike twice
9. Branch to the line labelled LP
10. Length of tape to encircle V cylinders of diameter B, rounding each piece up to the nearest integer
11. First differences of vector NC
12. R5 followed by 1 if LS and V2 are identical, otherwise followed by 0
13. *(⍟V)-⍟A
14. B≡(-⍴B)↑1 for bit vector B
15. (1+E)-⍳E in origin 1
16. ⎕__ to change the sensitivity of =
17. (((1↑⍴R),1)⍴5),[2]R for matrix R
18. +/⍳7
19. C+0×⍳V for numeric scalar C
20. )RESET
21. Alternating sum
22. ⎕__ to use either whole numbers (0, 1, 2, ...) or natural numbers (1, 2, 3, ...)
23. (⍳0)⍴C[⍋C]
24. ,+/NV≠(N*2)*0.5 vector NV, scalar N
25. A_L

Down¶

1. C different random numbers from ⍳X
2. ⎕__ to get things going
3. CL←____ to increment CL
4. ('SCA',⍎'''⍉P↑L''')~'APL'
5. V floored at ¯2 and repeated to shape LW
6. Localize AM
7. The value of a programming language lies in its ____
8. P/R for P and R scalars
9. Is vector V in ascending order?
10. (⌽(VEC<0)/⍳⍴VEC),(⌽(VEC=0)/⍳⍴VEC),(⌽(VEC>0)/⍳⍴VEC)
11. If BL15←,S<15 for matrix S, return flagged elements of S
12. Branch to the line labelled P if R is less than 5
13. Return all but the first P elements of matrix BRI, but capped at 0
14. 3.14159...
15. V[B+⍳(⍴V)-B]
16. ⎕__ to get list of fns or vars
17. (CS↓V),CS↑V for positive CS
18. ÷C÷N
19. ,⍉(12,⍴VI)⍴VI for vector VI
20. (+/C)⍴G for bit vector C, scalar G
21. 0-NM
22. G-I×⌊G÷I
23. ⎕__ to express a user-defined function as a character matrix
24. Number of rows and columns in M
25. 1-N for Boolean N

Solution to Crossword in 20.2¶