yydai

#!/usr/bin/python3
# By Steve Hanov, 2011. Released to the public domain.
# Please see http://stevehanov.ca/blog/index.php?id=115 for the accompanying article.
#
# Based on Daciuk, Jan, et al. "Incremental construction of minimal acyclic finite-state automata." 
# Computational linguistics 26.1 (2000): 3-16.
#
# Updated 2014 to use DAWG as a mapping; see 
# Kowaltowski, T.; CL. Lucchesi (1993), "Applications of finite automata representing large vocabularies", 
# Software-Practice and Experience 1993

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import org.apache.hadoop.hive.ql.exec.UDF;

public class CheckSwapCharsUDF extends UDF {
    public Integer evaluate(String str1, String str2) throws Exception {
        if (str1 == null || str2 == null)
            return -1;
        int s1_len = str1.length();
        int s2_len = str2.length();
        if (s1_len != s2_len)
            return -1;

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// drop the duplicate values
Set<String> set = new HashSet<>(fullMatch);
fullMatch.clear();
fullMatch.addAll(set);

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# install emacs
sudo add-apt-repository ppa:ubuntu-elisp/ppa
sudo apt update
sudo apt install emacs-snapshot emacs-snapshot-el

# install gnome-tweak-tool
sudo apt-get install  gnome-tweak-tool

# install pip3
sudo apt install python3-pip

yydai

https://zhuanlan.zhihu.com/p/51827233

tar -cvpzf /media/ubuntu_backup@`date +%Y-%m+%d`.tar.gz –exclude=/proc –exclude=/tmp –exclude=/home/yingdai/Workspace/Qunar/Gitlab/h_xsearch –exclude=/lost+found –exclude=/media –exclude=/mnt –exclude=/run /

tar -xvpzf /media/ubuntu_backup@2016-6-6.tar.gz -C /

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查看文件大小

du -sh * / du -sh <filename>

查看目录中的文件大小

du -h –max-depth=1 <folder>

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% ==== Document Class & Packages =====
\documentclass[12pt,hidelinks]{article}
        \usepackage[explicit]{titlesec}
        \usepackage{titletoc}
        \usepackage{tocloft}
        \usepackage{charter}
        \usepackage[many]{tcolorbox}
        \usepackage{amsmath}
        \usepackage{graphicx}
        \usepackage{xcolor}

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#include <iostream>
#include <stdio.h>
#include <vector>
#include <string>
#define N 256

using namespace std;

struct TreeNode {
	bool isEnd;

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import matplotlib.pyplot as plt

x = np.linspace(-5, 5, 200)     # x data, shape=(100, 1)
y1 = 2 * x #...
y2 = x ** 2 + 2
y3 = sin(x)


plt.figure(1, figsize=(8, 6))
plt.subplot(221)

yydai

Python Code snippets

1. File

1. Reading specific lines only (Python)

https://stackoverflow.com/questions/2081836/reading-specific-lines-only-python

with open("file") as fp:
    for i, line in enumerate(fp):
        if i == 25: