Question: Given two strings x = x 1 x 2 xn and y = y 1 y 2 ym , we wish to find the length

Given two strings x = x1x2xn and y = y1y2ym, we wish to find the length of their longest com-
mon substring, that is, the largest k for which there are indices i and j with xixi+1... xi+k1=
yj yj+1... yj+k1. Show how to do this in time O(mn). Write the subproblem definition, recurrence
relation, base case with explanation, and analyze the running time

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