摘要：
https://leetcode.com/problems/trapping-rain-water/Givennnon-negative integers representing an elevation map where the width of each bar is 1, compute ... 阅读全文
摘要：
https://leetcode.com/problems/candy/There areNchildren standing in a line. Each child is assigned a rating value.You are giving candies to these child... 阅读全文
摘要：
https://leetcode.com/problems/compare-version-numbers/Compare two version numbersversion1andversion2.Ifversion1>version2return 1, ifversion1 Integer.p... 阅读全文