似水流年。

摘要： Given a list, rotate the list to the right bykplaces, wherekis non-negative.For example:Given1->2->3->4->5->NULLandk=2,return4->5->1->2->3->NULL.题目大意：... 阅读全文

摘要： Divide two integers without using multiplication, division and mod operator.If it is overflow, return MAX_INT.题目大意：不用乘除取模运算计算两个数的除。解题思路：只能用位运算了，当被除数大于... 阅读全文

摘要： Given a set of distinct integers,nums, return all possible subsets.Note:Elements in a subset must be in non-descending order.The solution set must not... 阅读全文

摘要： Given an array of non-negative integers, you are initially positioned at the first index of the array.Each element in the array represents your maximu... 阅读全文

摘要： 首先，sds即simple dynamic string，redis实现这个的时候使用了一个技巧，并且C99将其收录为标准，即柔性数组成员（flexible array member），参考资料见这里。柔性数组成员不占用结构体的空间，只作为一个符号地址存在，而且必须是结构体的最后一个成员。柔性数组成... 阅读全文

摘要： Evaluate the value of an arithmetic expression inReverse Polish Notation.Valid operators are+,-,*,/. Each operand may be an integer or another express... 阅读全文

摘要： Given an input string, reverse the string word by word.For example,Given s = "the sky is blue",return "blue is sky the".Update (2015-02-12):For C prog... 阅读全文

摘要： Given a collection of integers that might contain duplicates,nums, return all possible subsets.Note:Elements in a subset must be in non-descending ord... 阅读全文

摘要： Givenn, how many structurally uniqueBST's(binary search trees) that store values 1...n?For example,Givenn= 3, there are a total of 5 unique BST's. 1... 阅读全文

摘要： Given a binary tree, return theinordertraversal of its nodes' values.For example:Given binary tree{1,#,2,3}, 1 \ 2 / 3return[1,3,2].Note... 阅读全文