filtering directly and indirectly connected things from list
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by Andreas Romeyke
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Published on 2010-03-15T08:53:21Z
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2010/03/15
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Hello,
if you have a function "test a b" which returns true if a and b are connected directly and if you have a given unordered list of things, what would be an elegant and fast solution to filter all connected things from given list?
Example:
let test a b = let diff = a - b in diff == 0 ;;
let lst = [4;1;7;3;8;9;2;0] ;;
filter_connected 2 lst ;;
-> [4;1;3;2;0]
Any hints?
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