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Initially, there is a Robot at position (0, 0). Given a sequence of its moves, judge if this robot makes a circle, which means it moves back to the or 阅读全文
摘要:
Given an array of non-negative integers. Our task is to find minimum number of elements such that their sum should be greater than the sum of rest of 阅读全文
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Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining. 阅读全文
摘要:
给定 n 个非负整数 a1, a2, ..., an, 每个数代表了坐标中的一个点 (i, ai)。画 n 条垂直线,使得 i 垂直线的两个端点分别为(i, ai)和(i, 0)。找到两条线,使得其与 x 轴共同构成一个容器,以容纳最多水。 注意事项 容器不可倾斜。 样例 给出[1,3,2], 最大 阅读全文