Access: Random / Sequential 1. Array element can be randomly accessed using index 2. Random access for element of linked list costs O(n) time 3. Generally, in linked list, elements are accessed sequentially Memory Structure 1. Elements of array is st…

[本文链接] http://www.cnblogs.com/hellogiser/p/quick-sort-of-array-and-linked-list.html [题目] 单链表的特点是:单向.设头结点位head,则最后一个节点的next指向NULL.如果只知道头结点head,请问怎么将该链表排序? [分析] 对于数组的快排:有2种方式. (1)指针相向移动:一个指针i指向头,一个指针j指向尾,然后两个指针相向运动并按一定规律交换值,最后找到一个支点p使得支点左边的值小于支点,支点右边的值…

链表是线性表的一种.线性表是最基本,最简单也是最常见的一种数据结构.线性表中数据元素之间的关系是一对一的关系,除了第一个和最后一个数据元素外,其他数据元素都是首尾相接的. 线性表有两种存储方式,一种是顺序存储结果,另一种是链式存储结构.数组就是一种最为常见的典型的顺序存储结构.相反,链式存储结构就是两个相邻的元素在内存中可能不是相邻的,每一个元素都有一个指针域,指针域一般是存储着到下一个元素的指针.这种存储方式的优点是插入和删除的时间复杂度为O(1),不会浪费太多内存,添加元素的时候才会申请内存…

Given an array of integers with possible duplicates, randomly output the index of a given target number. You can assume that the given target number must exist in the array. Note: The array size can be very large. Solution that uses too much extra sp…

Given an array nums containing n + 1 integers where each integer is between 1 and n (inclusive), prove that at least one duplicate element must exist. Assume that there is only one duplicate number, find the duplicate one. Note: You must not modify t…

Given an array and a value, remove all instances of that value in place and return the new length. The order of elements can be changed. It doesn't matter what you leave beyond the new length. 这道题让我们移除一个数组中和给定值相同的数字,并返回新的数组的长度.是一道比较容易的题,我们只需要一个变量用来计数…

LINQ中大部分查询运算符都有一个非常重要的特性:延迟执行.这意味着,他们不是在查询创建的时候执行,而是在遍历的时候执行(换句话说,当enumerator的MoveNext方法被调用时).让我们考虑下面这个query: ); IEnumerable<); ); // Add an extra element after the query foreach (int n in query) Console.Write(n + "|"); // 10|20| } 可以看出,我们在查询…

Hough Transform Introduction: The Hough transform is an algorithm that will take a collection of points, and find all the lines on which these points lie. we define a line as a collection of points that are adjacent and have the same direction. In or…

函数Abs() 描述: mixed abs (mixed number); Returns the absolute value of number. If the argument number is float, return type is also float, otherwise it is int(返回所输的数字的绝对值,浮点型返回浮点型,其他返回整型) 函数Abs() 描述: mixed abs (mixed number); Returns the absolute value…

参考链接:https://docs.google.com/spreadsheet/pub?key=0Aqt--%20wSNYfuxdGxQWVFsOGdVVWxQRlNUVXZTdEpOeEE&output=html ID Question Diff Freq Data Structure Algorithms                                   1 Two Sum 2 5 array sort           set Two Pointers   2 Add…