giles
526ffbb5f0
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Floyd-Warshall all-pairs shortest path with triple-nested for-loop:
for k = 0 to n - 1 do
for i = 0 to n - 1 do
for j = 0 to n - 1 do
if d.(i).(k) + d.(k).(j) < d.(i).(j) then
d.(i).(j) <- d.(i).(k) + d.(k).(j)
done
done
done
Graph (4 nodes, directed):
0->1 weight 5, 0->3 weight 10, 1->2 weight 3, 2->3 weight 1
Direct edge 0->3 = 10, but path 0->1->2->3 = 5+3+1 = 9.
Tests 2D array via Array.init with closure, nested .(i).(j) read
+ write, triple-nested for, in-place mutation under aliasing.
148 baseline programs total.