Tony's Log

Algorithms, Distributed System, Machine Learning
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2015年11月14日

LeetCode "Range Sum Query 2D - Immutable"
摘要： Yes the accu* is not necessary :)class NumMatrix { vector> dp;public: NumMatrix(vector> &matrix) { int h = matrix.size(); if(!h) ret... 阅读全文
posted @ 2015-11-14 10:19 Tonix 阅读(118) 评论(0) 推荐(0)

LeetCode "Smallest Rectangle Enclosing Black Pixels"
摘要： Here is the thought flow: we are trying 'find' the boundary - it is a search, so binary search.class Solution { bool isRowHit(vector>& image, int r) ... 阅读全文
posted @ 2015-11-14 08:08 Tonix 阅读(223) 评论(0) 推荐(0)