Add graph references

2026-06-28 13:49:01 +01:00
parent 0a9807e448
commit a11edf0c53
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+// vim:fileencoding=utf-8:foldmethod=marker
+
+#ifndef QUEUE_H
+#define QUEUE_H
+
+/*	queue.h
+
+	Header file for queue implementation
+*/
+
+/* Copyright 2003-2020 by Steven S. Skiena; all rights reserved.
+Permission is granted for use in non-commerical applications
+provided this copyright notice remains intact and unchanged.
+
+These programs appear in my books:
+
+"The Algorithm Design Manual" by Steven Skiena, second edition, Springer,
+London 2008.  See out website www.algorist.com for additional information
+or https://www.amazon.com/exec/obidos/ASIN/1848000693/thealgorith01-20
+
+"Programming Challenges: The Programming Contest Training Manual"
+by Steven Skiena and Miguel Revilla, Springer-Verlag, New York 2003.
+See our website www.programming-challenges.com for additional information,
+or https://www.amazon.com/exec/obidos/ASIN/0387001638/thealgorithmrepo/
+*/
+
+#include "item.h"
+
+#define QUEUESIZE 1000
+
+typedef struct {
+    item_type q[QUEUESIZE+1];           /* body of queue */
+    int first;                          /* position of first element */
+    int last;                           /* position of last element */
+    int count;                          /* number of queue elements */
+} queue;
+
+void init_queue(queue *q);
+void enqueue(queue *q, item_type x);
+item_type dequeue(queue *q);
+item_type headq(queue *q);
+int empty_queue(queue *q);
+void print_queue(queue *q);
+
+#endif // !QUEUE_H