[CTCI] 双栈排序 - Eason Liu - 博客园



[CTCI] 双栈排序 - Eason Liu - 博客园

双栈排序

题目描述

请编写一个程序，按升序对栈进行排序（即最大元素位于栈顶），要求最多只能使用一个额外的栈存放临时数据，但不得将元素复制到别的数据结构中。

给定一个int[] numbers(C++中为vector<int>)，其中第一个元素为栈顶，请返回排序后的栈。请注意这是一个栈，意味着排序过程中你只能访问到第一个元素。

测试样例：
[1,2,3,4,5]
返回：[5,4,3,2,1]

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