数据结构 - 单调栈 Monotonic Stack 在算法问题中,许多问题都与单调性相关。例如:寻找数组中某个元素左侧或右侧比它大的元素; 解决栈相关的问题,比如计算有效的括号、接雨水问题; 处理与区间、滑动窗口相关的动态问题。许多这样的问题如果直接暴力处理,可能会导致 O(n2)O(n2) 的复杂度,这在面对大数据时会变得非常...
Monotonic Stack 是一种特殊的栈数据结构,常用于解决一类涉及到元素顺序、区间最大最小值等问题。其核心特性是栈内的元素按某种单调顺序排列,即每次向栈中压入新元素时,都会保证栈内的元素按某种顺序单调递增或单调递减。具体来说,Monotonic Stack 可以分为两种类型: 单调递增栈(Monotonic Increasing Stack):栈内元素...
什么是Monotonic Stack?答:从栈顶到栈底是按照单调顺序排列的。739. Daily Temperatures 问题描述:问题求解:维护一个从栈顶到栈底单调递增的栈。从末尾向前遍历,如果当前的数值比栈顶的数值要大的话,那么显然更小的数值是不再需要的了,直接pop即可。1 2 3 4 5 6 7 8 9 10 public int[] dailyTemperatures(...
单调栈 Monotonic Stack Next Greater Element I Next Greater Element II Daily Temperatures 456. 132 Pattern 栈内元素按单调递增或单调递减来排列。 Next Greater Element I You are given two arrays(without duplicates)nums1andnums2wherenums1’s elements are subset ofnums2. Find all the next greater nu...
}returns.length()==0 ? "0" : s.toString();//第三坑,如果删空了,要返回"0"的} } 84. Largest Rectangle in Histogram Hard Given an array of integersheightsrepresenting the histogram's bar height where the width of each bar is1, returnthe area of the largest rectangle in the histogram....
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随笔分类 - 摘要:C. Skyscrapers "原题传送门" Problem Restatement 第一行有一个整数n(1≤n≤500000)n(1≤n≤500000),表示发展商购买了nn块地。 第二行,nn个整数 $m_1, m_2, \ldots, m_n\ (1 \leq m_i \leq
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Youtube Link I also created some basic problems to help you practice the stuff covered in the video. You can access the group using this linkhttps://codeforces.com/group/7Dn3ObOpauIn the contests section, you'll see a contest by the nameMonotonic Stack + DP. If you want me to add ...
A detailed explanation of leetcode 84, applying a monotonically increasing stack to tackle the problem