From c6bc541ab58363d783e60a007e80e9bf9e231fda Mon Sep 17 00:00:00 2001
From: garhve <git@garhve.com>
Date: Mon, 5 Dec 2022 19:43:39 +0800
Subject: initialize

---
 .../queue.c"                                       | 53 ++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100755 "c/dataStructure/\346\240\210\345\222\214\351\230\237\345\210\227/\351\230\237\345\210\227/\345\276\252\347\216\257\351\230\237\345\210\227/queue.c"

(limited to 'c/dataStructure/栈和队列/队列/循环队列/queue.c')

diff --git "a/c/dataStructure/\346\240\210\345\222\214\351\230\237\345\210\227/\351\230\237\345\210\227/\345\276\252\347\216\257\351\230\237\345\210\227/queue.c" "b/c/dataStructure/\346\240\210\345\222\214\351\230\237\345\210\227/\351\230\237\345\210\227/\345\276\252\347\216\257\351\230\237\345\210\227/queue.c"
new file mode 100755
index 0000000..2c7f781
--- /dev/null
+++ "b/c/dataStructure/\346\240\210\345\222\214\351\230\237\345\210\227/\351\230\237\345\210\227/\345\276\252\347\216\257\351\230\237\345\210\227/queue.c"
@@ -0,0 +1,53 @@
+#include "queue.h"
+
+bool InitQueue(Queue * q)
+{
+    q->base = (int *) malloc (sizeof(int) * MAXSIZE);
+    if (!q->base)
+    {
+        fprintf(stderr,"Failed to allocate memory!\n");
+        return false;
+    }
+
+    q->front = q->rear = 0;
+}
+
+bool EnQueue(Queue * q, int e)
+{
+    if ((q->rear + 1)%MAXSIZE == q->front)
+    {
+        fprintf(stderr,"Queue is full!\n");
+        return false;
+    }
+
+    q->base[q->rear] = e;
+    q->rear = (q->rear + 1) % MAXSIZE;
+
+    return true;
+}
+
+bool DeQueue(Queue * q, int * e)
+{
+    if (q->front == q->rear)
+    {
+        fprintf(stderr,"Queue is empty");
+        return false;
+    }
+
+    *e = q->base[q->front];
+    q->front = (q->front + 1) % MAXSIZE;
+
+    return true;
+}
+
+int LengthQueue(Queue * q)
+{
+    return (q->rear - q->front + MAXSIZE) % MAXSIZE;
+}
+
+int GetHead(Queue * q)
+{
+    if (q->front != q->rear)
+        return q->base[q->front];
+    return -1;
+}
\ No newline at end of file
-- 
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