Problem

Two trees, T1 and T2, are isomorphic if T1 can be transformed into T2 by swapping left and...

Two trees, T1 and T2, are isomorphic if T1 can be transformed into T2 by swapping left and right children of (some of the) nodes in T1. For instance, the two trees in Figure 1 are isomorphic because they are the same if the children of A, B, and G, but not the other nodes, are swapped.

a. Give a polynomial time algorithm to decide if two trees are isomorphic.
b. What is the running time of your program (there is a linear solution)?

Figure 1: Two isomorphic trees

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Solutions For Problems in Chapter 4

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