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contents of Vector 20.1
www.vector.org.uk >
back issues >
contents of Vector 20.1
Across
1. Where the active workspace came from
6. Coding and testing are ______ in APL than in other languages
12. Format the absolute values of the elements in vector X corresponding to 1 bits in vector M
14. Matrix MAT with vector E as a new rightmost column
15. Flag distinct elements (first occurrences) in vector VA
17. Conjugate (imaginary portion is negated) of complex number C (for APL systems with complex number support)
18. Round elements of RDS to nearest integers (with X.5 down to X )
19. Do all the elements of V equal IMP ?
20. A times pi
21. I×DK for scalar I , bit vector DK , without multiplying
23. RB [5+¼TN ]
24. Current size of the symbol table
26. ×/I½*1
27. C[;1]÷C[;2] for two-column matrix C
28. P=0 for Boolean P
29. J2L [____] to get J2L in sorted order
31. ¯15†1
32. M[___;]to get M in alphabetic order according to the alphabet A
33. Name of the • function
35. Rank (number of dimensions) of Y
37. One random number from the set (U×L+1), (U×L+2), (U×L+3), ... (U×L+Y)
38. How good programmers spend the majority of their time
Down
2. Display VC to W decimal paces
3. A-SטA÷S
4. Index in vector IM of its largest number
5. Elements in vector VRV corresponding to 1s in bit vector D
7. Flag the first M elements of S that equal -AM
8. Index in vector SA of 1÷P5
9. Array of 2s, with shape TT
10. Vector V with scalar E stuck to its front
11. Speed, size and ___________: the key measures of APL program quality
13. Flag elements of TOP5 that match scalar XAD
15. Average across each row of matrix D
16. Local variables in suspension
19. Flag leading elements of vector YC that are integers
20. Area of circle of radius R
22. (+/KS)½5 for integer vector KS
25. (~B¹M[12+¼(½M)-12])/B
29. Ranking vector for golf scores RLI (1 = lowest score)
30. Add N to each element of JMM
32. Product of AO and T
33. APL is ___ to use
34. From the set ¼G , return A distinct random numbers
36. Length of vector O
