数组实现其存储结构也就是顺序，这类队列也称顺序队列。
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typedef int Position; struct QNode { ElementType *Data; /* 存储元素的数组 */ Position Front, Rear; /* 队列的头、尾指针 */ int MaxSize; /* 队列最大容量 */ }; typedef struct QNode *Queue; Queue CreateQueue( int MaxSize ) { Queue Q = (Queue)malloc(sizeof(struct QNode)); Q->Data = (ElementType *)malloc(MaxSize * sizeof(ElementType)); Q->Front = Q->Rear = 0; Q->MaxSize = MaxSize; return Q; } bool IsFull( Queue Q ) { return ((Q->Rear+1)%Q->MaxSize == Q->Front); } bool AddQ( Queue Q, ElementType X ) { if ( IsFull(Q) ) { printf("队列满"); return false; } else { Q->Rear = (Q->Rear+1)%Q->MaxSize; Q->Data[Q->Rear] = X; return true; } } bool IsEmpty( Queue Q ) { return (Q->Front == Q->Rear); } ElementType DeleteQ( Queue Q ) { if ( IsEmpty(Q) ) { printf("队列空"); return ERROR; } else { Q->Front =(Q->Front+1)%Q->MaxSize; return Q->Data[Q->Front]; } } |