langs a-z

2013-04-10 22:43:41 -07:00 · 2013-04-10 22:43:41 -07:00 · d066446780
commit d066446780
parent db842d013d
11389 changed files with 98361 additions and 1020 deletions
--- a/Task/Hailstone-sequence/Mathematica/hailstone-sequence-3.math
+++ b/Task/Hailstone-sequence/Mathematica/hailstone-sequence-3.math
@ -0,0 +1,12 @@
+Hailstone[n_] :=
+ NestWhileList[Which[Mod[#, 2] == 0, #/2, True, ( 3*# + 1) ] &, n, # != 1 &];
+c27 = Hailstone@27;
+Print["Hailstone sequence for n = 27: [", c27[[;; 4]], "...", c27[[-4 ;;]], "]"]
+Print["Length Hailstone[27] = ", Length@c27]
+
+longest = -1; comp = 0;
+Do[temp = Length@Hailstone@i;
+ If[comp < temp, comp = temp; longest = i],
+ {i, 100000}
+ ]
+Print["Longest Hailstone sequence at n = ", longest, "\nwith length = ", comp];