42 lines
982 B
V
42 lines
982 B
V
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// Breadth-First Search (BFS) allows you to find the shortest distance between two nodes in the graph.
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fn breadth_first_search_path(graph map[string][]string, vertex string, target string) []string {
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mut path := []string{}
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mut visited := []string{init: vertex}
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mut queue := [][][]string{}
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queue << [[vertex], path]
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for queue.len > 0 {
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mut idx := queue.len - 1
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node := queue[idx][0][0]
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path = queue[idx][1]
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queue.delete(idx)
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if node == target {
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path << node
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return path
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}
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for child in graph[node] {
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mut tmp := path.clone()
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if child !in visited {
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visited << child
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tmp << node
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queue << [[child], tmp]
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}
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}
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}
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return path
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}
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fn main() {
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graph := map{
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'A': ['B', 'C']
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'B': ['A', 'D', 'E']
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'C': ['A', 'F']
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'D': ['B']
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'E': ['B', 'F']
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'F': ['C', 'E']
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}
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println('Graph: $graph')
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path := breadth_first_search_path(graph, 'A', 'F')
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println('The shortest path from node A to node F is: $path')
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assert path == ['A', 'C', 'F']
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}
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