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RSS订阅转载 阅读《C陷阱与缺陷》的知识增量
这本书是在ASCI C/C89订制之前写的，有些地方有疏漏。第一章 词法陷阱1.3 C语言中解析符号时使用贪心策略，如x+++++y将被解析为x++ ++ +y，并编译出错。1.5 单引号引起的一个字符代表一个对应的整数，对于采用ASCII字符集的编译器而言，'a'与0141、97含义一致。练习1.1 嵌套注释（如/*/**/*/）只在某些C编译器中允许，如gcc4
2015-07-23 22:09:41
306
原创 LeetCode之旅（39）
Best Time to Buy and Sell Stock IISay you have an array for which the ith element is the price of a given stock on dayi.Design an algorithm to find the maximum profit. You may complete as
2014-09-04 19:55:15
390
原创 LeetCode之旅（38）
Container With Most WaterGiven n non-negative integers a1,a2, ..., an, where each represents a point at coordinate (i,ai). n vertical lines are drawn such that the two endpoints of linei
2014-09-04 18:58:37
355
原创 LeetCode之旅（37）
Best Time to Buy and Sell StockSay you have an array for which the ith element is the price of a given stock on dayi.If you were only permitted to complete at most one transaction (ie, buy
2014-09-02 21:52:08
318
原创 LeetCode之旅（36）
Pascal's TriangleGiven numRows, generate the first numRows of Pascal's triangle.For example, given numRows = 5,Return[ [1], [1,1], [1,2,1], [1,3,3,1], [1,4,6,4,1]]
2014-09-02 20:52:25
343
原创 LeetCode之旅（35）
Gray CodeThe gray code is a binary numeral system where two successive values differ in only one bit.Given a non-negative integer n representing the total number of bits in the code, print t
2014-09-02 20:33:42
398
原创 LeetCode之旅（34）
3SumGiven an array S of n integers, are there elementsa, b, c in S such that a + b +c = 0? Find all unique triplets in the array which gives the sum of zero.Note:Elements in a trip
2014-09-01 16:59:29
355
原创 LeetCode之旅（33）
Linked List Cycle IIGiven a linked list, return the node where the cycle begins. If there is no cycle, returnnull.Follow up:Can you solve it without using extra space?
2014-08-31 19:20:26
329
原创 LeetCode之旅（32）
Binary Tree Postorder TraversalGiven a binary tree, return the postorder traversal of its nodes' values.For example:Given binary tree {1,#,2,3}, 1 \ 2 / 3return [3
2014-08-31 17:35:39
296
原创 LeetCode之旅（31）
A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below).The robot can only move either down or right at any point in time. The robot is trying to reach the
2014-08-31 16:20:22
504
原创 LeetCode之旅（30）
Two SumGiven an array of integers, find two numbers such that they add up to a specific target number.The function twoSum should return indices of the two numbers such that they add up to th
2014-08-31 15:24:11
323
原创 LeetCode之旅（28）
Sort ColorsGiven an array with n objects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, white and blue.Here, we will
2014-08-30 23:40:43
366
原创 LeetCode之旅（26）
Symmetric TreeGiven a binary tree, check whether it is a mirror of itself (ie, symmetric around its center).For example, this binary tree is symmetric: 1 / \ 2 2 / \ / \3 4 4
2014-08-29 21:08:01
317
原创 LeetCode之旅（25）
Remove Duplicates from Sorted ArrayGiven a sorted array, remove the duplicates in place such that each element appear onlyonce and return the new length.Do not allocate extra space for ano
2014-08-29 19:33:19
398
原创 LeetCode之旅（24）
Swap Nodes in PairsGiven a linked list, swap every two adjacent nodes and return its head.For example,Given 1->2->3->4, you should return the list as 2->1->4->3.Your algorithm should use
2014-08-29 18:56:14
352
原创 LeetCode之旅（23）
Convert Sorted Array to Binary Search TreeGiven an array where elements are sorted in ascending order, convert it to a height balanced BST.
2014-08-29 17:41:29
417
原创 LeetCode之旅（18）
Integer to RomanGiven an integer, convert it to a roman numeral.Input is guaranteed to be within the range from 1 to 3999.
2014-08-28 14:49:19
302
原创 LeetCode之旅（17）
Given a roman numeral, convert it to an integer.Input is guaranteed to be within the range from 1 to 3999.很无聊的一道题，不过
2014-08-28 14:35:48
286
原创 LeetCode之旅（16）
Climbing StairsYou are climbing a stair case. It takes n steps to reach to the top.Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top?经典的跳台
2014-08-28 14:21:41
1100
原创 LeetCode之旅（15）
Remove Duplicates from Sorted ListGiven a sorted linked list, delete all duplicates such that each element appear onlyonce.For example,Given 1->1->2, return 1->2.Given 1->1->2->3->3, r
2014-08-28 14:15:02
281
原创 LeetCode之旅（13）
Populating Next Right Pointers in Each NodeGiven a binary tree struct TreeLinkNode { TreeLinkNode *left; TreeLinkNode *right; TreeLinkNode *next; }Populate each n
2014-08-27 15:56:25
276
原创 LeetCode之旅（9）
Unique Binary Search TreesGiven n, how many structurally unique BST's (binary search trees) that store values 1...n?For example,Given n = 3, there are a total of 5 unique BST's.
2014-08-26 21:50:10
319
原创 LeetCode之旅（8）
Reverse IntegerReverse digits of an integer.Example1: x = 123, return 321Example2: x = -123, return -321
2014-08-26 00:20:10
347
原创 LeetCode之旅（4）
Sort ListSort a linked list in O(n log n) time using constant space complexity.
2014-08-25 22:17:42
448
原创 LeetCode之旅（3）
Max Points on a LineGiven n points on a 2D plane, find the maximum number of points that lie on the same straight line.
2014-08-24 11:57:49
431
原创 LeetCode之旅（2）
Evaluate Reverse Polish NotationEvaluate the value of an arithmetic expression in Reverse Polish Notation.Valid operators are +, -, *, /. Each operand may be an integer or another expressi
2014-08-24 10:46:51
357
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