130 likes | 236 Vues
This document presents an idiom for traversing a null-terminated linked list using iteration in Java. The common pattern involves a loop that starts at the first node and continues until it encounters a null reference. The provided code snippet demonstrates how to print each item stored in the nodes of the linked list. The example linked list contains three items: Alice, Bob, and Carol. This method is essential for handling linked lists in a straightforward and efficient manner.
E N D
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
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
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
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
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
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
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
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
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
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
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
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
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