单调栈和队列讲解:传送门 HDU -1506题意: 就是给你一些矩形的高度,让你统计由这些矩形构成的那个矩形面积最大 如上图所示,如果题目给出的全部是递增的,那么就可以用贪心来解决 从左向右依次让每一个矩形的高度当作最后的高度,来从中选取最大值就可以了 但是如果它不是递增的,中间会出现低谷,那么要还想运用贪心策略就要把之前高度大于它的全部扔掉,但是再扔掉他们之前还要判断一下以他们为最后答案的高度可不可行,这样我们就是在构造一个递增序列,可以用栈来维护它 代码: 1 #include<stdio.…

前置问题:51nod 1102 面积最大的矩形 附上链接: 51nod 1102 面积最大的矩形 这题的题解博客 需要了解的知识:单调栈,在前置问题中已经讲解. 解题思路 对每行求左边连续1的个数,得到数组a[i][j]; 对于第j列,找出每个位置i的数字a[i][j]上面第一个比它小数字l,和下面第一个比它小的数字r. 由这个点所在列为底,这个点的数字为最小值产生的矩形的面积为a[i][j]*(r-l-1),用这一列每一个面积更新ans. 上面2的求法就是单调栈了,总时间复杂度o(n*m).…

E - Largest Rectangle in a Histogram Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 1506 Appoint description: Description A histogram is a polygon composed of a sequence of rectangles aligned a…

Largest Rectangle in a Histogram Problem Description: A histogram is a polygon composed of a sequence of rectangles aligned at a common base line. The rectangles have equal widths but may have different heights. For example, the figure on the left sh…

题目链接:HDU - 1506 A histogram is a polygon composed of a sequence of rectangles aligned at a common base line. The rectangles have equal widths but may have different heights. For example, the figure on the left shows the histogram that consists of rec…

题目网址:http://acm.hdu.edu.cn/showproblem.php?pid=1506 题目: Largest Rectangle in a Histogram Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 18833    Accepted Submission(s): 5636 Problem Description…

Description A histogram is a polygon composed of a sequence of rectangles aligned at a common base line. The rectangles have equal widths but may have different heights. For example, the figure on the left shows the histogram that consists of rectang…

Largest Rectangle in a Histogram Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 11706    Accepted Submission(s): 3219 Problem Description A histogram is a polygon composed of a sequence of rec…

                                                                                                   Largest Rectangle in a Histogram       A histogram is a polygon composed of a sequence of rectangles aligned at a common base line. The rectangles have…

Largest Rectangle in a Histogram Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 11137    Accepted Submission(s): 3047 Problem Description A histogram is a polygon composed of a sequence of rec…