Largest Rectangle in Histogram (直方图中最大面积) 【leetcode】
题目:Given n non-negativeintegersrepresentingthehistogram'sbarheightwherethewidthofeachbaris1,findtheareaoflargestrectangleinthehistogram.Aboveisahistogramwherewidthofeachbaris1,givenheight= [2,1,5,6,2,