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来自「浙江大学计算机学院数据结构课程的教学课件」· HTM 代码 · 共 55 行
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<pre align="left"><font face="Arial, Helvetica, sans-serif" size="4" color="#000000"><b>
<font color="#0033CC">Program:</font> <font color="#FF0000">Add to the raer of a linked queue
</font>
void addq(queue_pointer *front, queue_pointer *rear, element item)
{ <i><font size="3" color="#ff0099"> /* add an element to the rear of the queue */</font></i>
queue_pointer temp = (queue_pointer)malloc(sizeof(queue));
if ( IS_FULL(temp) ) {
fprintf(stderr, "The memory is full\n");
exit(1);
}
temp->item = item;
temp->link = NULL;
if ( *front ) (*rear)->link = temp;
else *front = temp;
*rear = temp;
}
<font color="#0033CC">Program</font>: <font color="#FF0000">Delete from the front of a linked queue</font>
element deleteq(queue_pointer *front)
{
<i><font size="3" color="#ff0099">/* delete an element from the queue */</font></i>
queue_pointer temp = *front;
element item;
if ( IS_EMPTY(*front) ) {
fprintf(stderr, "The queue is empty\n");
exit(1);
}
item = temp->item;
*front = temp->link;
free(temp);
return item;
}
</b></font></pre>
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