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Consider the following nested representation of binary trees indicates y and z are the left right subtrees, respectively, of node x. Note that y and z may be NULL or further nested. Which of the follo | |
A. | (1(234)(567) [Correct Answer] |
B. | (1 2(4 5 6 7)) [Wrong Answer] |
C. | (1(2 3 NULL)(4 5)) [Wrong Answer] |
D. | 1((2 3 NULL)4 5 6)7) [Wrong Answer] |