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堆（英语：heap)是计算机科学中一类特殊的数据结构的统称。堆通常是一个可以被看做一棵树的数组对象。堆总是满足下列性质：堆中某个节点的值总是不大于或不小于其父节点的值；堆总是一棵完全二叉树。将根节点最大的堆叫做最大堆或大根堆，根节点最小的堆叫做最小堆或小根堆。常见的堆有二叉堆、斐波那契堆等。堆的定义...

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引言思考：如果我们需要用程序来表示一个多项式,如 $$ y = 3x^4+2x^2+1 $$ 我们可以使用哪些东西呢？数组我们可以用一个数组a[i]来存储这个多项式 i 0 1 2 3 4 a[i] 1 0 2 0 3 我们可以看到这里我们用i来表示幂次，用a[i]来表示方程的系数。但是这里...

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