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a) Provide an algorithm/pseudocode for finding the penultimate (second-last) node in a doubly linked list where the last node is indicated by a null next
a) Provide an algorithm/pseudocode for finding the penultimate (second-last) node in a doubly linked list where the last node is indicated by a null next reference (Java)
b) Provide an algorithm/pseudocode to find the th last element of a singly linked list starting with only the header sentinel (Java)
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