APL Crossword 5

  1. The inverse of +\, i.e. the first difference of V
  2. 1↓⌽1↓'[(A)]'
  3. 1⊥⍳4
  4. Accept numeric input; call it NMV
  5. Negate the vector MB and show its running total, LIFO (last in, first out) basis
  6. Given distinct values in A, return ⍳⍴A without using ⍴
  7. Where T is found in V
  8. (R×11)⍴11/V
  9. The elements of V, capped at 99
  10. 3↑'(0∊3↑V)'')'
  11. SN is contained in…
  12. The two row matrix YM of year and month numbers, converted to months since the year 0000, for date arithmetic
  13. If SV represents Scalar left argument, Vector right argument, what combination can cause LENGTH ERROR for scalar functions?
  14. (V×25)+(25×N>0)-(25×N<0)
  15. The magnitude of K
  16. Outer product product
  17. The location of V’s first 9
  18. Evaluated input as a vector
  19. The opposite of +/ (silly)
  20. For scalar MA, +/20⍴MA
  21. 10 13 16 19 … 34
  22. The number of elements in any array V
  23. (⍳5)∘.=(⍳5)
  1. The fractions used to spread a value, given relative weights in the vector V
  2. ¯1↓(¯1↑V9),V9)
  3. 9 8 7 6 … 1
  4. ~∧/,B
  5. One more than VN if any of Y are true
  6. The system command for ⎕NL 2
  7. Set A as the indices of the elements of the vector NV
  8. The distinct values in the character vector V
  9. A nice acronym for ⍳0
  10. If N is 1 9 9 2, an expression that returns 1992
  11. The values of the matrix M, rounded to the nearest integer
  12. If VN=0, return ⍳0; but if VN is positive, return two elements of …
  13. The number of 1s in the vector …
  14. 10⍴⍳M, in origin 0
  15. Add to each of the elements of V the numbers 1 to 5
  16. Fido’s favourite variable name
  17. The location in V of 27 and …
  18. (2/(2⍴(1⍴'()')))
  19. Are there some elements in …
  20. The matrix M expressed as a vector, with a 0 after each row
  21. … A is true only if A is a nonscalar
  22. 2*5
  23. ¯2↑'–(⍳9)'
  24. The most efficient expression that returns 1