摘要： Given a non-negative number represented as an array of digits, plus one to the number.The digits are stored such that the most significant digit is at... 阅读全文

摘要： Given amxnmatrix, if an element is 0, set its entire row and column to 0. Do it in place.要求空间复杂度为o(1)思路：把数组划分为两部分，第一部分是第一行和第一列；第二部分是除去第一行第一列的矩阵部分。1.先记... 阅读全文

摘要： Given a sorted integer array without duplicates, return the summary of its ranges.For example, given[0,1,2,4,5,7], return["0->2","4->5","7"].class Sol... 阅读全文