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Little explorations with HP calculators (no Prime)
12-29-2018, 12:10 AM (This post was last modified: 12-29-2018 12:24 PM by Albert Chan.)
Post: #333
RE: Little explorations with HP calculators (no Prime)
Hi 3298

Sorry I do not follow the logic ... (balls cannot be "rearranged", see post #331)

Actually match_count function (with head + tail version) already proved it.

Inside the loop: s = s - h + t, where h and t = 0 or 1
Thus s is only allowed changes of 0, ±1

s started as sum(head), ended as sum(tail), this implied s visited every integer within the gap.

If gap = 0, sum(head) = sum(tail) = 50, we found the sublist.
If not, 50 is within the gap of visited integers, s must be 50 at some point.
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RE: Little explorations with HP calculators (no Prime) - Albert Chan - 12-29-2018 12:10 AM



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