mengdiwang’s gists

mengdiwang / regex.py

Last active April 25, 2018 05:56

regex.py

	# coding=utf8
	# the above tag defines encoding for this document and is for Python 2.x compatibility

	import re

	regex = r'<a target="_blank" title="(.?)" href="(.?)">(.*?)</a>'

	test_str = "<p>　　二〇一八年四月二十日<br><br><a target=\"_blank\" title=\"上海证券交易所股票上市规则（2018年4月修订）\" href=\"/aboutus/mediacenter/hotandd/a/20180420/4a6cd527bc7bcac21dd66a2abb60d3d5.doc\">上海证券交易所股票上市规则（2018年4月修订）<br></a><a target=\"_blank\" title=\"《上海证券交易所股票上市规则（2018年4月修订）》修订说明\" href=\"/aboutus/mediacenter/hotandd/a/20180420/f086a86397ee054f984443a8ac9d1f3a.doc\">《上海证券交易所股票上市规则（2018年4月修订）》修订说明</a><br><br type=\"_moz\"> </p>"

	matches = re.finditer(regex, test_str, re.MULTILINE \| re.UNICODE)

mengdiwang / gist:d26cc8148e76e0cdd97e31d23a103b66

Created June 7, 2017 23:09

git clean up ignores

	$ git rm -r --cached .
	$ git add .
	$ git commit -m "Clean up ignored files"

mengdiwang / Leetcode Downloader (Feb 2016)

Last active November 3, 2016 02:00 — forked from antonylhz/Leetcode Downloader (Feb 2016)

	# Steps To follow to download your leetcode:
	#1. Login to leetcode account on your default browser
	#2. Get your session Id for leetcode.com from Browser ( for chrome: press F12, Go to Resources, Go to Cookies and copy value of field 'PHPSESSID'; you can find similar value for firefox and other browsers).
	#3. Create a folder to save your leetcode codes.
	#4. Keep the downloaded leetcode.py into that folder
	#5. Replace PHPSESSID field in leetcode.py file with your session ID (copied in step 2)
	#6. run file as 'python leetcode.py
	#7. wait for all submssions to download.

	# Features:

mengdiwang / findMaxDiffIdx.cc

Last active October 12, 2016 19:51

mengdiwang / useful_pandas_snippets.py

Created April 28, 2016 00:48 — forked from bsweger/useful_pandas_snippets.md

Useful Pandas Snippets

	#List unique values in a DataFrame column
	pd.unique(df.column_name.ravel())

	#Convert Series datatype to numeric, getting rid of any non-numeric values
	df['col'] = df['col'].astype(str).convert_objects(convert_numeric=True)

	#Grab DataFrame rows where column has certain values
	valuelist = ['value1', 'value2', 'value3']
	df = df[df.column.isin(value_list)]

mengdiwang / searchInsert.cpp

Created November 1, 2015 05:16

searchInsert

	class Solution {
	public:
	int searchInsert(vector<int>& nums, int target) {
	int lo = 0;
	int hi = nums.size()-1;
	while(lo<=hi)
	{
	int mid = ((lo-hi)>>1) + hi;
	if(nums[mid] == target)
	return mid;

mengdiwang / lc_96.cpp

Created October 30, 2015 21:57

Unique Binary Search Trees

mengdiwang / lc_116.cpp

Created October 30, 2015 21:12

Populating Next Right Pointers in Each Node

	/**
	* Definition for binary tree with next pointer.
	* struct TreeLinkNode {
	* int val;
	* TreeLinkNode left, right, *next;
	* TreeLinkNode(int x) : val(x), left(NULL), right(NULL), next(NULL) {}
	* };
	*/
	class Solution {
	public:

mengdiwang / lc_268.cpp

Created October 30, 2015 19:26

Missing Number

	class Solution {
	public:
	int missingNumber(vector<int>& nums) {
	int sum = 0;
	for(int i=0; i<nums.size(); i++)
	{
	sum += nums[i];
	}
	return (1+nums.size())*nums.size()/2 - sum;
	}

mengdiwang / lc_141.cpp

Created October 30, 2015 19:17

Linked List Cycle

	/**
	* Definition for singly-linked list.
	* struct ListNode {
	* int val;
	* ListNode *next;
	* ListNode(int x) : val(x), next(NULL) {}
	* };
	*/
	class Solution {
	public:

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