[面试题 03.05][中等] 栈排序
题目描述
输入:
["SortedStack", "push", "push", "peek", "pop", "peek"]
[[], [1], [2], [], [], []]
输出:
[null,null,null,1,null,2] 输入:
["SortedStack", "pop", "pop", "push", "pop", "isEmpty"]
[[], [], [], [1], [], []]
输出:
[null,null,null,null,null,true]解题思路
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