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Efficiently Traversing a Null-Terminated Linked List with Iteration Idiom

This guide explains the iteration idiom for traversing a null-terminated linked list. Using a simple loop, we can access each node in the list by starting from the first node and continuing until we hit a null reference. The example provided illustrates how to print each item stored in the list, demonstrating the clarity and efficiency of this method. Understanding this idiom is crucial for handling linked lists in programming, ensuring you work with data structures effectively.

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Efficiently Traversing a Null-Terminated Linked List with Iteration Idiom

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  1. Traversing a List • Iteration. Idiom for traversing a null-terminated linked list. for(Node x = first; x !=null; x = x.next) { StdOut.println(x.item); } first Alice Bob Carol null item next

  2. Traversing a List • Iteration. Idiom for traversing a null-terminated linked list. for(Node x = first; x !=null; x = x.next) { StdOut.println(x.item); } x first Alice Bob Carol null item next

  3. Traversing a List • Iteration. Idiom for traversing a null-terminated linked list. for(Node x = first; x !=null; x = x.next) { StdOut.println(x.item); } x first Alice Bob Carol null item next

  4. Traversing a List • Iteration. Idiom for traversing a null-terminated linked list. for(Node x = first; x !=null; x = x.next) { StdOut.println(x.item); } x Alice first Alice Bob Carol null item next

  5. Traversing a List • Iteration. Idiom for traversing a null-terminated linked list. for(Node x = first; x !=null; x = x.next) { StdOut.println(x.item); } x Alice first Alice Bob Carol null item next

  6. Traversing a List • Iteration. Idiom for traversing a null-terminated linked list. for(Node x = first; x !=null; x = x.next) { StdOut.println(x.item); } x Alice first Alice Bob Carol null item next

  7. Traversing a List • Iteration. Idiom for traversing a null-terminated linked list. for(Node x = first; x !=null; x = x.next) { StdOut.println(x.item); } x Alice Bob first Alice Bob Carol null item next

  8. Traversing a List • Iteration. Idiom for traversing a null-terminated linked list. for(Node x = first; x !=null; x = x.next) { StdOut.println(x.item); } x Alice Bob first Alice Bob Carol null item next

  9. Traversing a List • Iteration. Idiom for traversing a null-terminated linked list. for(Node x = first; x !=null; x = x.next) { StdOut.println(x.item); } x Alice Bob first Alice Bob Carol null item next

  10. Traversing a List • Iteration. Idiom for traversing a null-terminated linked list. for(Node x = first; x !=null; x = x.next) { StdOut.println(x.item); } x Alice Bob Carol first Alice Bob Carol null item next

  11. Traversing a List • Iteration. Idiom for traversing a null-terminated linked list. for(Node x = first; x !=null; x = x.next) { StdOut.println(x.item); } x Alice Bob Carol first Alice Bob Carol null item next

  12. Traversing a List • Iteration. Idiom for traversing a null-terminated linked list. for(Node x = first; x !=null; x = x.next) { StdOut.println(x.item); } x Alice Bob Carol first Alice Bob Carol null item next

  13. Traversing a List • Iteration. Idiom for traversing a null-terminated linked list. for(Node x = first; x !=null; x = x.next) { StdOut.println(x.item); } Alice Bob Carol first Alice Bob Carol null item next

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