(49g 50g) Fast Pascal's triangle and its relatives

03022019, 07:12 PM
Post: #7




RE: (49g 50g) Fast Pascal's triangle and its relatives
(08202018 12:43 AM)Joe Horn Wrote: Smaller but a tad slower (just thinking of alternative methods for fun): Similar idea without using LASTARG: Code: \<< 0 OVER + SWAP 0 + ADD \>> BTW: Both variants work with { 1 } while John Keith's solutions starts working with { 1 1 }. However they can't use the symmetry and do only half of the work when Pascal's triangle is generated. Instead we'd have to use two programs say ODD and EVEN that we call alternatively. ODD Code: \<< 0 OVER + REVLIST TAIL REVLIST ADD \>> EVEN Code: \<< 0 OVER + SWAP DUP REVLIST HEAD + ADD \>> Examples: { 1 } ODD { 1 } EVEN { 1 2 } ODD { 1 3 } EVEN { 1 4 6 } ODD { 1 5 10 } EVEN { 1 6 15 20 } ODD { 1 7 21 35 } … Cheers Thomas 

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Messages In This Thread 
(49g 50g) Fast Pascal's triangle and its relatives  John Keith  08112018, 04:58 PM
RE: (49g 50g) Fast Pascal's triangle and its relatives  Joe Horn  08122018, 12:41 AM
RE: (49g 50g) Fast Pascal's triangle and its relatives  John Keith  08122018, 02:12 PM
RE: (49g 50g) Fast Pascal's triangle and its relatives  John Keith  08192018, 02:14 PM
RE: (49g 50g) Fast Pascal's triangle and its relatives  Joe Horn  08202018, 12:43 AM
RE: (49g 50g) Fast Pascal's triangle and its relatives  John Keith  08202018, 12:15 PM
RE: (49g 50g) Fast Pascal's triangle and its relatives  Thomas Klemm  03022019 07:12 PM
RE: (49g 50g) Fast Pascal's triangle and its relatives  John Keith  01282020, 06:12 PM
RE: (49g 50g) Fast Pascal's triangle and its relatives  John Keith  12152021, 07:31 PM

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