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原创 Python Web Development with Flask
1. Flask1.1 How Flask Routing Works…2. Flask-Admin…3. Flask-SQLAlchemy…AlembicQ1: How to clear history and run all migrations from the beginning?A1: Following works in Vagrant, dropdb SNEAKERBANK crea
2016-11-10 19:29:57
487
原创 [Git] Common Usage
rebaseBefore: “This branch is 3 commits behind octantis:master.” git fetch upstream git rebase upstream/master git push origin masterAfter: “This branch is even with octantis:master.”Screens
2016-10-24 10:08:01
861
原创 解决Gradio离线部署，无法正常加载页面的问题
运行时的UI使用的前端代码里，有对互联网资源的引用，如果在离线环境下部署（比如公司内网），会无法启动成功，看不到正常的前端页面。PyPi地址：https://pypi.org/project/gradio-offline/3.28.3.1/修改的，目的是为了支持离线部署，API不变。
2023-05-22 15:42:06
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原创 LeetCode #1996. The Number of Weak Characters in the Game
[LeetCode]1996. The Number of Weak Characters in the Gameclass Solution: def numberOfWeakCharacters(self, properties: List[List[int]]) -> int: """ Time Complexity: O(n * log(n)) Space Complexity: O(1) Where:
2021-09-09 19:54:50
134
原创 LeetCode 487. Max Consecutive Ones II
LeetCode 487. Max Consecutive Ones II
2017-01-15 21:19:06
1106
原创 LeetCode 482. License Key Formatting
LeetCode 482. License Key Formatting
2017-01-08 22:25:31
611
原创 LeetCode 477. Total Hamming Distance
LeetCode 477. Total Hamming Distance
2016-12-18 11:44:15
362
原创 PHP Type Hinting (类型提示)
概述 从PHP5开始，我们可以使用类型提示来指定定义函数时，函数接收的参数类型。如果在定义函数时，指定了参数的类型，那么当我们调用函数时，如果实参的类型与指定的类型不符，那么PHP会产生一个致命级别的错误(Catchable fatal error)。http://www.gy0929.com/wz/1368.html
2016-12-09 11:07:25
1575
原创 LeetCode 434. Number of Segments in a String
Problem StatementCount the number of segments in a string, where a segment is defined to be a contiguous sequence of non-space characters.For example,Input: "Hello, my name is John"Output: 5Solutioncla
2016-12-04 11:59:59
560
原创 LeetCode 463. Island Perimeter
Problem Statement(Source) You are given a map in form of a two-dimensional integer grid where 1 represents land and 0 represents water. Grid cells are connected horizontally/vertically (not diagonally)
2016-12-03 11:34:50
221
转载 Python中的多继承
Python和C++一样，支持多继承。概念虽然容易，但是困难的工作是如果子类调用一个自身没有定义的属性，它是按照何种顺序去到父类寻找呢，尤其是众多父类中有多个都包含该同名属性。class P1 #(object): def foo(self): print 'p1-foo' class P2 #(object): def foo(self):
2016-11-25 12:01:04
463
原创 [TODO]LeetCode 37. Sudoku Solver
Problem Statement(Source) Write a program to solve a Sudoku puzzle by filling the empty cells.Empty cells are indicated by the character '.'.You may assume that there will be only one unique solution.
2016-11-15 22:47:24
303
原创 LeetCode 282. Expression Add Operators
Problem Statement(Source) Given a string that contains only digits 0-9 and a target value, return all possibilities to add binary operators (not unary) +, -, or * between the digits so they evaluate to
2016-11-14 21:32:35
377
原创 LeetCode 327. Count of Range Sum
Problem Statement(Source) Given an integer array nums, return the number of range sums that lie in [lower, upper] inclusive. Range sum S(i, j) is defined as the sum of the elements in nums between ind
2016-11-14 08:57:27
451
原创 LeetCode 432. All O`one Data Structure
Problem Statement(Source) Implement a data structure supporting the following operations:Inc(Key) - Inserts a new key with value 1. Or increments an existing key by 1. Key is guaranteed to be a non-em
2016-11-13 23:32:10
904
原创 LeetCode 381. Insert Delete GetRandom O(1) - Duplicates allowed
Problem Statement(Source) Design a data structure that supports all following operations in average O(1) time.Note: Duplicate elements are allowed.insert(val): Inserts an item val to the collection.r
2016-11-13 23:02:18
278
原创 LeetCode 126. Word Ladder II
Problem Statement(Source) Given two words (beginWord and endWord), and a dictionary’s word list, find all shortest transformation sequence(s) from beginWord to endWord, such that:Only one letter can b
2016-11-13 21:42:05
730
原创 LeetCode 127. Word Ladder
(Source) Given two words (beginWord and endWord), and a dictionary’s word list, find the length of shortest transformation sequence from beginWord to endWord, such that:Only one letter can be changed
2016-11-13 19:00:07
294
原创 LeetCode 44. Wildcard Matching
Problem Statement(Source) Implement wildcard pattern matching with support for '?' and '*'.'?' Matches any single character.'*' Matches any sequence of characters (including the empty sequence).The ma
2016-11-13 15:55:31
269
原创 LeetCode 456. 132 Pattern
Problem Statement(Source) Given a sequence of n integers a1,a2,...,ana_1, a_2, ..., a_n, a 132 pattern is a subsequence ai,aj,aka_i, a_j, a_k such that i < j < k and ai<ak<aja_i < a_k < a_j. Design an
2016-11-13 14:26:15
969
原创 LeetCode 454. 4Sum II
Problem Statement(Source) Given four lists A, B, C, D of integer values, compute how many tuples (i, j, k, l) there are such that A[i] + B[j] + C[k] + D[l] is zero.To make problem a bit easier, all A,
2016-11-13 14:10:41
935
原创 LeetCode 459. Repeated Substring Pattern
Problem Statement(Source) Given a non-empty string check if it can be constructed by taking a substring of it and appending multiple copies of the substring together. You may assume the given string co
2016-11-13 11:37:19
934
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