[Leetcode]895.最大频率栈

Problem 实现 FreqStack,模拟类似栈的数据结构的操作的一个类. FreqStack 有两个函数: push(int x),将整数 x 推入栈中. pop(),它移除并返回栈中出现最频繁的元素. 如果最频繁的元素不只一个,则移除并返回最接近栈顶的元素. 示例: 输入: ["FreqStack","push","push","push","push","push","…

[LeetCode] 895. Maximum Frequency Stack 最大频率栈

Implement FreqStack, a class which simulates the operation of a stack-like data structure. FreqStack has two functions: push(int x), which pushes an integer xonto the stack. pop(), which removes and returns the most frequent element in the stack. If…

leetcode Maximal Rectangle 单调栈

作者:jostree 转载请注明出处 http://www.cnblogs.com/jostree/p/4052721.html 题目链接:leetcode Maximal Rectangle 单调栈该题目是 leetcode Largest Rectangle in Histogram 的二维版本,首先进行预处理,把一个n×m的矩阵化为n个直方图,然后在每个直方图中计算使用单调栈的方法计算面积最大的矩形,然后求得最大的矩形面积即可. Ps:这题直接在网页里面敲完居然1A,不错. 代码如下:…

LeetCode 155：最小栈 Min Stack

LeetCode 155:最小栈 Min Stack 设计一个支持 push,pop,top 操作,并能在常数时间内检索到最小元素的栈. push(x) -- 将元素 x 推入栈中. pop() -- 删除栈顶的元素. top() -- 获取栈顶元素. getMin() -- 检索栈中的最小元素. Design a stack that supports push, pop, top, and retrieving the minimum element in constant time. pu…

[LeetCode] Min Stack 最小栈

Design a stack that supports push, pop, top, and retrieving the minimum element in constant time. push(x) -- Push element x onto stack. pop() -- Removes the element on top of the stack. top() -- Get the top element. getMin() -- Retrieve the minimum e…

[LeetCode] Max Stack 最大栈

Design a max stack that supports push, pop, top, peekMax and popMax. push(x) -- Push element x onto stack. pop() -- Remove the element on top of the stack and return it. top() -- Get the element on the top. peekMax() -- Retrieve the maximum element i…

[Swift]LeetCode895. 最大频率栈 | Maximum Frequency Stack

Implement FreqStack, a class which simulates the operation of a stack-like data structure. FreqStack has two functions: push(int x), which pushes an integer x onto the stack. pop(), which removes and returns the most frequent element in the stack. If…