# (Solved Homework): We are given a weighted complete bipartite graph G = (X; Y; X x Y ), where X = {x1…..xn} and Y = {y1 …….. ym}, with

We are given a weighted complete bipartite graph G = (X; Y; X x Y ), where X = {x1…..xn} and Y = {y1 …….. ym}, with n < m. By w(i,j) we denote the weight of edge (x i ; yj ). A cross-free matching M is a matching between X and Y in which no two edges “cross”. More specically, if i < j and (x i ; y k ); (x j ; y l ) (belong to) M then k < l. The weight of a matching M is the sum of the weights of the edges in M . Give a dynamic programming algorithm that computes a perfect cross-free matching in G of minimum weight (perfect here means that each node in X is matched { some of the nodes in Y will remain unmatched). Analyze the space and time complexity of your solution

set = {}
i = input.length – 1
while i >= 1
if input[i] == input[i – 1]
i–
else
set << vertex i
i -= 2
end
end
return set

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