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RSS订阅原创 weka入门教程II——分类
读研时转过一篇《weka入门教程》。当时机器学习还没有这么火。Weka其实非常方便，有图形界面，可以识别多种格式，自动切分测试集与训练集等功能。这篇主要介绍图形界面下分类的用法，其他机器学习任务大同小异。weka可以从官方网站下载：https://www.cs.waikato.ac.nz/ml/weka/安装就不说了，安装好后运行，Windows在菜单中可以找到，Linux运行weka.s...
2020-03-06 11:46:38
1919
原创 LeetCode Java First 400 题解-034
Search for a Range MediumGiven an array of integers sorted in ascending order, find the starting and ending position of a given target value.Your algorithm's runtime complexity must be in the o...
2019-11-20 13:08:55
403
原创 LeetCode Java First 400 题解-033
Search in Rotated Sorted Array MediumSuppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand.(i.e.,0 1 2 4 5 6 7might become4 5 6 7 0 1 2).You are giv...
2019-11-20 13:05:32
421
原创 LeetCode Java First 400 题解-032
Longest Valid Parentheses HardGiven a string containing just the characters'('and')', find the length of the longest valid (well-formed) parentheses substring.For"(()", the longest valid pa...
2019-11-19 13:27:21
304
原创 LeetCode Java First 400 题解-031
Next Permutation MediumImplement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers.If such arrangement is not possible, it must rearrange...
2019-11-18 11:57:55
305
原创 LeetCode Java First 400 题解-030
Substring with Concatenation of All Words HardYou are given a string,s, and a list of words,words, that are all of the same length. Find all starting indices of substring(s) insthat is a conc...
2019-11-01 06:44:06
333
原创 LeetCode Java First 400 题解-029
Divide Two Integers MediumDivide two integers without using multiplication, division and mod operator.If it is overflow, return MAX_INT.public int divide(int dividend, int divisor) { if...
2019-11-01 06:43:25
271
原创 LeetCode Java First 400 题解-028
Implement strStr()EasyImplement strStr().Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.public int strStr(String haystack, String ne...
2019-11-01 06:42:51
276
原创 LeetCode Java First 400 题解-027
Remove Element EasyGiven an array and a value, remove all instances of that value in place and return the new length.Do not allocate extra space for another array, you must do this in place wit...
2019-11-01 06:42:20
274
原创 LeetCode Java First 400 题解-026
Remove Duplicates from Sorted Array EasyGiven a sorted array, remove the duplicates in place such that each element appear onlyonceand return the new length.Do not allocate extra space for an...
2019-11-01 06:41:45
323
原创 LeetCode Java First 400 题解-025
Reverse Nodes in k-Group HardGiven a linked list, reverse the nodes of a linked listkat a time and return its modified list.kis a positive integer and is less than or equal to the length of ...
2019-11-01 06:41:04
253
原创 LeetCode Java First 400 题解-024
Swap Nodes in Pairs MediumGiven a linked list, swap every two adjacent nodes and return its head.For example,Given1->2->3->4, you should return the list as2->1->4->3.Your...
2019-11-01 06:39:25
290
原创 LeetCode Java First 400 题解-023
Merge k Sorted Lists HardMergeksorted linked lists and return it as one sorted list. Analyze and describe its complexity.public ListNode mergeKLists(ListNode[] lists) { if (lists == nul...
2019-11-01 06:38:46
242
原创 LeetCode Java First 400 题解-022
Generate Parentheses MediumGivennpairs of parentheses, write a function to generate all combinations of well-formed parentheses.For example, givenn= 3, a solution set is:[ "((()))", ...
2019-11-01 06:38:17
340
原创 LeetCode Java First 400 题解-021
Merge Two Sorted Lists EasyMerge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lists.public ListNode mergeTwo...
2019-11-01 06:37:41
246
原创 LeetCode Java First 400 题解-020
Valid Parentheses EasyGiven a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid.The brackets must close in the correct order,"()"an...
2019-10-30 00:29:42
252
原创 LeetCode Java First 400 题解-019
Remove Nth Node From End of List MediumGiven a linked list, remove thenthnode from the end of list and return its head.For example, Given linked list: 1->2->3->4->5, and n = ...
2019-10-30 00:28:59
286
原创 LeetCode Java First 400 题解-018
4Sum MediumGiven an arraySofnintegers, are there elementsa,b,c, anddinSsuch thata+b+c+d= target? Find all unique quadruplets in the array which gives the sum of target.Note:...
2019-10-30 00:27:46
361
原创 LeetCode Java First 400 题解-017
Letter Combinations of a Phone Number MediumGiven a digit string, return all possible letter combinations that the number could represent.A mapping of digit to letters (just like on the telepho...
2019-10-30 00:26:55
228
原创 LeetCode Java First 400 题解-016
3Sum Closest MediumGiven an arraySofnintegers, find three integers inSsuch that the sum is closest to a given number, target. Return the sum of the three integers. You may assume that each ...
2019-10-30 00:24:10
155
原创 LeetCode Java First 400 题解-015
3Sum MediumGiven an arraySofnintegers, are there elementsa,b,cinSsuch thata+b+c= 0? Find all unique triplets in the array which gives the sum of zero.Note:The solution set must...
2019-10-30 00:19:15
204
原创 LeetCode Java First 400 题解-014
Longest Common Prefix EasyWrite a function to find the longest common prefix string amongst an array of strings.public String longestCommonPrefix(String[] strs) { if (strs.length == 0)...
2019-10-30 00:17:08
149
原创 LeetCode Java First 400 题解-013
Roman to Integer EasyGiven a roman numeral, convert it to an integer.Input is guaranteed to be within the range from 1 to 3999.public int romanToInt(String s) { int sum = 0; if (s....
2019-10-30 00:16:15
212
原创 LeetCode Java First 400 题解-012
Integer to Roman MediumRoman numerals are represented by seven different symbols:I,V,X,L,C,DandM.Symbol ValueI 1V 5X 10L 50...
2019-10-30 00:04:40
226
原创 LeetCode Java First 400 题解-011
Container With Most Water MediumGivennnon-negative integersa1,a2, ...,an, where each represents a point at coordinate (i,ai).nvertical lines are drawn such that the two endpoints of line...
2019-10-30 00:03:32
204
原创 LeetCode Java First 400 题解-010
Regular Expression Matching HardGiven an input string (s) and a pattern (p), implement regular expression matching with support for'.'and'*'.'.' Matches any single character.'*' Matches ze...
2019-10-26 13:15:09
201
原创 LeetCode Java First 400 题解-009
Palindrome Number EasyDetermine whether an integer is a palindrome. Do this without extra space.Some hints:Could negative integers be palindromes? (ie, -1)If you are thinking of converting ...
2019-10-26 13:00:20
188
原创 LeetCode Java First 400 题解-008
String to Integer (atoi) MediumImplementatoito convert a string to an integer.Hint:Carefully consider all possible input cases. If you want a challenge, please do not see below and ask yours...
2019-10-26 12:48:54
222
原创 LeetCode Java First 400 题解-007
Reverse Integer EasyReverse digits of an integer.Example1:x = 123, return 321Example2:x = -123, return -321click to show spoilers.Have you thought about this?Here are some good question...
2019-10-26 12:43:13
222
原创 LeetCode Java First 400 题解-006
ZigZag Conversion MediumThe string"PAYPALISHIRING"is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font for better legibility...
2019-10-26 11:22:24
140
原创 北京大学软件与微电子学院08届就业统计
2010就业去向：http://blog.youkuaiyun.com/Felomeng/archive/2010/06/11/5662980.aspx61565部队Autodesk Design Software (Shanghai)Co.,LtdAutodesk Design Software(上海)公司BEA公司CA(冠群电脑)GoogleIBMIBMIBMIBMIBMI...
2019-10-23 12:56:59
12880
4
原创 LeetCode Java First 400 题解-005
Longest Palindromic Substring MediumGiven a strings, find the longest palindromic substring ins. You may assume that the maximum length ofsis 1000.Example:Input: "babad"Output: "bab"...
2019-10-23 12:37:35
236
原创 LeetCode Java First 400 题解-004
Median of Two Sorted Arrays HardThere are two sorted arraysnums1andnums2of size m and n respectively.Find the median of the two sorted arrays. The overall run time complexity should be O(lo...
2019-10-23 12:36:47
232
原创 LeetCode Java First 400 题解-003
Longest Substring Without Repeating Characters MediumGiven a string, find the length of thelongest substringwithout repeating characters.Examples:Given"abcabcbb", the answer is"abc", whic...
2019-10-23 12:27:25
215
原创 LeetCode Java First 400 题解 - 002
Add Two Numbers MediumYou are given twonon-emptylinked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contain a single digit. Add t...
2019-10-23 12:18:27
222
原创 LeetCode Java First 400 题解-001
Two sumGiven an array of integers, returnindicesof the two numbers such that they add up to a specific target.You may assume that each input would haveexactlyone solution, and you may not use ...
2019-10-22 11:44:39
293
转载 Oracle 常用环境变量查询
select SYS_CONTEXT('USERENV','TERMINAL') terminal, SYS_CONTEXT('USERENV','LANGUAGE') language, SYS_CONTEXT('USERENV','SESSIONID') sessionid, SYS_CONTEXT('USERENV','INSTANCE') instance, SYS_CONTEXT('US
2017-08-11 00:39:11
6114
原创 赴美攻略
主要地名了解一下当地的一些主要地各机票购买先找所有可行路线。根据自己情况选择转机与否。在美国第一站需要入关。买票时请买往返票，时间约半年，最好提前一周左右回，以免出现极端天气造成滞留，影响下次入境。因为入关时海关会限定你的入关时间，一般为期半年。样子如下：红色的是入境日期，B1是签证类型（你们应该是B2）。海关可能会把出境日期写在签证类型下面。具体出境日期可以以后在线查询。转机分为两种，美国国内转
2016-11-12 20:59:55
5348
原创 美国签证面签攻略
携带材料：1. 你们的护照。2. DS-160确认页，每人一份。可能用到姓名电报号（自己记在确认页上即可）3. 签证交费收据4. 给签证官的信（邀请你们来美的证据）5. 我的Offer、工作证、I-797、我的护照和I-94（我的收入和稳定工作证据），王芳的I-94及结婚证6. 亲子关系公证7. 全家
2016-11-12 20:31:05
7654
Felomeng家庭理财2.1
2009-07-06
Thinking in C++ 2nd Edition volume 1 & 2（C++编程思想第二版第一卷＆第二卷）附完整源代码
2009-04-19
ikvm-0.38.0.2
2009-04-10
ikvm-0.38.0.2
2009-04-10
Speech and Language Processing 第二版
2009-03-25
自然语言处理方向一些基本的论文
2009-03-25
Foundations of Statistical Natural Language Processing（麻省理工自然语言处理综论）
2009-03-25
LeetCode前400题Java精美版
2020-10-03
C# 无窗体示例程序
2012-01-02
WTL for MFC Programmers英文版PDF，附演示代码
2011-04-02
Programming Windows with MFC, second editon
2011-04-02
google c++ style guide PDF版（带目录及标签目录）
2011-03-15
ibus Linux下的五笔98码表文件
2010-04-02
Designing.Interfaces
2009-07-30
Felomeng个人所得税计算器绿色版
2009-07-10
Felomeng家庭理财1.13源码
2009-07-07
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