407. Trapping rain water II

#407.-Trapping-rain-water-II

How to draw tables and hightlight?

#How-to-draw-tables-and-hightlight?

Solution1: 围而强攻之: stack - 由外向内

#Solution1:-围而强攻之:-stack---由外向内
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Code

#Code

Solution2

#Solution2
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#Code