Heap的插入和刪除 C語言

堆heap用完全二叉樹儲存

其特點是：根的數都大於每個子節點的數

typedef

struct heapstruct *maxheap;
typedef
int elementtype;
struct heapstruct
;

maxheap create

(int maxsize)

void

insert
(maxheap h,elementtype item)
i =++h->size;
while
(item > h->d[i/2]
) h->d[i]
= item;
}

void

delete
(maxheap h)
maitem = h->d[1]
; tmp = h->d[h->size--];
for(parent =
1;parent*
2<= h->size;parent = child)
if(tmp >= h->d[child]
)break;} 
h->d[parent]
= tmp;
return maxitem;
}

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