29 lines
611 B
Plaintext
29 lines
611 B
Plaintext
= Bellman Ford =
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Bellman ford is an algorithm for finding the shortest path from some node to
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all other nodes in a weighted graph
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== PsuedoCode ==
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Input: directed graph _G=(V,E)_;
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Edge lengths contained in the set _E_ with no negative cycles; Edge is _e_;
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_s_ contained in _V_;
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Output: For all verticies _u_ reachable from _s_, `dist(u)` is set to the
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distance from _s_ to _u_
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{{{
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for all u in V:
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dist(u) = inf
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prev(u) = null
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dist(s) = 0
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repeat |V| - 1 times:
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for all e contained in E:
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update(e)
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update((u,v) in e):
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dist(v) = min(dist(v), dist(u) + length of dist between u and v)
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}}}
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