摘要：
You are given annxn2D matrix representing an image.Rotate the image by 90 degrees (clockwise).Follow up:Could you do this in-place?题目要就地算法，那么可以通过折叠矩阵上... 阅读全文
摘要：
Write an efficient algorithm that searches for a value in anmxnmatrix. This matrix has the following properties:Integers in each row are sorted from l... 阅读全文
摘要：
Given a sorted array of integers, find the starting and ending position of a given target value.Your algorithm's runtime complexity must be in the ord... 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.这题要注意的就是应该是就地执行，所以可以先采取一个数组将所有0元素的位置记下来，然后一次性的全部置成0即可： 1 clas... 阅读全文
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Given an array of sizen, find the majority element. The majority element is the element that appears more than⌊ n/2 ⌋times.You may assume that the arr... 阅读全文
摘要：
Given two sorted integer arraysnums1andnums2, mergenums2intonums1as one sorted array.Note:You may assume thatnums1has enough space (size that is great... 阅读全文