原创 [Leetcode] 118. Pascal's Triangle

Given numRows, generate the first numRows of Pascal's triangle. For example, given numRows = 5, Return [ [1],

原创 [Leetcode] 106. Construct Binary Tree from Inorder and Postorder Traversal

Given inorder and postorder traversal of a tree, construct the binary tree. /** * Definition for binary tree * public

原创 numpy和scipy介紹

轉載於http://reverland.org/python/2012/08/24/scipy/#scipynumpymatplotlib SciPy入門指南(譯)  Published at 24 August 2012

原创 NumPy的詳細教程

先決條件 在閱讀這個教程之前,你多少需要知道點python。如果你想從新回憶下,請看看Python Tutorial. 如果你想要運行教程中的示例,你至少需要在你的電腦上安裝了以下一些軟件: PythonNumPy 這些是可能對你有

原创 [Leetcode] 142. Linked List II

Given a linked list, return the node where the cycle begins. If there is no cycle, return null. Follow up: Can you s

原创 [Leetcode] 131. Palindrome Partitioning

Given a string s, partition s such that every substring of the partition is a palindrome. Return all possible palind

原创 [Leetcode] 140. Work Break II

Given a string s and a dictionary of words dict, add spaces in s to construct a sentence where each word is a valid

原创 [Leetcode] 136. Single Number

Given an array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm sh

原创 [Leetcode] 139. Work Break

Given a string s and a dictionary of words dict, determine if s can be segmented into a space-separated sequence of o

原创 [Leetcode] 132. Palindrome Partitioning II

Given a string s, partition s such that every substring of the partition is a palindrome. Return the minimum cuts ne

原创 [Leetcode] 127. Word Ladder

Given two words (start and end), and a dictionary, find the length of shortest transformation sequence from start to 

原创 [Leetcode] 141. Linked List Cycle

Given a linked list, determine if it has a cycle in it. Follow up: Can you solve it without using extra space? /**

原创 [Leetcode] 130. Surrounded Region

Given a 2D board containing 'X' and 'O', capture all regions surrounded by 'X'. A region is captured by flipping al

原创 [Leetcode] 137. Single Number II

Given an array of integers, every element appears three times except for one. Find that single one. Note: Your algor

原创 [Leetcode] 138. Copy List with Random Pointer

A linked list is given such that each node contains an additional random pointer which could point to any node in the