摘要:
Givennxmnon-negative integers representing an elevation map 2d where the area of each cell is1x1, compute how much water it is able to trap after rain... 阅读全文
摘要:
Givennnon-negative integers representing an elevation map where the width of each bar is1, compute how much water it is able to trap after raining.Exa... 阅读全文