Kelvinson

public static Node reverseAndClone(Node list) {
		Node head = null;
		while (list != null) {
			Node n = new Node(list.val);
			n.next = head;
			head = n;
			list = list.next;
		}
		return head;
	}

Kelvinson

	/**
	 * This solution does not to store the whole link of nodes
	 * only the first half is needed to be stored so it is friendly 
	 * for space complexity. It use fast runner and slow runner to 
	 * find the middle point of the list of node.
	 * @param list
	 * @return
	 */
	
	// Note: When I implemented this method I made two mistakes:

Kelvinson

#include <iostream>
#include <string>
#include <vector>
#include <queue>
#include <stack>
#include <algorithm>

using namespace std;

class Node{

Kelvinson

"""
Minimal character-level Vanilla RNN model. Written by Andrej Karpathy (@karpathy)
BSD License
"""
import numpy as np

# data I/O
data = open('input.txt', 'r').read() # should be simple plain text file
chars = list(set(data))
data_size, vocab_size = len(data), len(chars)

Kelvinson

In this article, I will share some of my experience on installing NVIDIA driver and CUDA on Linux OS. Here I mainly use Ubuntu as example. Comments for CentOS/Fedora are also provided as much as I can.

Table of Contents

• Install NVIDIA Graphics Driver via apt-get
• Install NVIDIA Graphics Driver via runfile
  • Remove Previous Installations (Important)
  • Download the Driver
  • Install Dependencies
  • Creat Blacklist for Nouveau Driver

• Stop lightdm/gdm/kdm

Kelvinson

#!/usr/bin/env python

"""
Download all the pdfs linked on a given webpage
Revised from the original author elssar's gist (https://gist.github.com/elssar/5160757) to scrap the pdf links in piazza resources
tab, the original script is for the websits don't need login. But you have
to login piazza to scape the contents. So I revised the request.post with
authentification info and turn the program to run with Python3
Usage -
    python grab_pdfs.py url <path/to/directory>

Kelvinson

index=1
# ls -rt means list in the order of oldest first 
for i in $(ls *.pdf -rt)
do
    cp "${i}" "${index}_${i}"
    index=$((index+1))
done

Kelvinson

// the solution by StefanPochmann https://leetcode.com/problems/swap-nodes-in-pairs/discuss/11019/7-8-lines-C++-Python-Ruby 
ListNode* swapPairs(ListNode* head) {
    ListNode **pp = &head, *a, *b;
    while ((a = *pp) && (b = a->next)) {
        a->next = b->next;
        b->next = a;
        *pp = b;
        pp = &(a->next);
    }
    return head;

Kelvinson

Kelvinson

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname