摘要：
Question: Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. Analysis: 给出一个m * n的矩阵，如果一个元素为0，则它整行整列都设为0. An 阅读全文
摘要：
Question: Given an array of n positive integers and a positive integer s, find the minimal length of a subarray of which the sum ≥ s. If there isn't o 阅读全文