摘要：
Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted f 阅读全文
摘要：
Given a matrix, if an element is , set its entire row and column to . Do it in place. 重点是空间复杂度限制为常数． 人家想法： 用 matrix 的第０行和第０列的元素分别记录所对应的行和列是否有０． 比较特殊，我 阅读全文