Zedong Zhang zhang-zedong

🏠

Working from home

zhang-zedong / lx2.py

Created August 4, 2021 04:17

	# check if a tree can divid into 3 equal subtree, just alowing cut at root .
	class Node:
	def __init__(self, val=None) -> None:
	self.val = val
	self.children = []

	def generate_tree(inputs):
	dic = {}
	dic[1] = Node(1)
	for pair in inputs:

zhang-zedong / check_equaltree.py

Last active May 25, 2021 04:15

check if a tree can divid into 3 equal subtree, just alowing cut at root .

	# check if a tree can divid into 3 equal subtree, just alowing cut at root .
	class Node:
	def __init__(self, val=None) -> None:
	self.val = val
	self.children = []

	def generate_tree(inputs):
	dic = {}
	dic[1] = Node(1)
	for pair in inputs:

zhang-zedong / post-install.sh

Created August 9, 2019 16:38

安装三个容器的脚本

	#!/usr/bin/env bash
	# aws s3 cp --acl public-read post-install.sh s3://zedong-hpc-bucket/post-install.sh
	# This script runs as root.

	# Disable Intel Hyper-Threading Technology at runtime
	for cpunum in $(cat /sys/devices/system/cpu/cpu*/topology/thread_siblings_list \| cut -s -d, -f2- \| tr ',' '\n' \| sort -un)
	do
	echo 0 > /sys/devices/system/cpu/cpu$cpunum/online
	done

zhang-zedong / .bash_profile

Created April 1, 2018 13:33

my bash_profile

	# Add `~/bin` to the `$PATH`
	export PATH="$HOME/bin:$PATH";

	# Load the shell dotfiles, and then some:
	# * ~/.path can be used to extend `$PATH`.
	# * ~/.extra can be used for other settings you don’t want to commit.
	for file in ~/.{path,bash_prompt,exports,aliases,functions,extra}; do
	[ -r "$file" ] && [ -f "$file" ] && source "$file";
	done;
	unset file;

zhang-zedong / FOR_Print.c

Created December 11, 2017 12:46

打印几个字符矩阵

zhang-zedong / RAILS_CHEATSHEET.md

Created November 15, 2017 05:27 — forked from mdang/RAILS_CHEATSHEET.md

Ruby on Rails Cheatsheet

Install the Rails gem if you haven't done so before

zhang-zedong / list-huangchao.c

Created April 26, 2017 12:47

13个节点的循环链表按照mod4的方法输出

	//
	// main.c
	// work-demo
	//
	// Created by 黄超 on 2017/4/26.
	// Copyright © 2017年黄超. All rights reserved.
	//

	#include <stdio.h>
	#include <stdlib.h>

zhang-zedong / demo.c

Created April 26, 2017 10:13

	#include <stdio.h>

	int main(int argc, const char * argv[]) {
	int i = 0;
	int j = 0;
	while (j != 100) {
	i = (i+1)%13;
	j++;
	if (j % 4==0) {
	printf("%d ", i);

zhang-zedong / order.rb

Last active April 23, 2017 15:22

order.rb

	class Order < ApplicationRecord
	belongs_to :user
	has_many :order_items

	def pay!
	self.update_columns(is_paid: true)
	end
	include AASM
	aasm do
	state :order_placed, :initial => true

zhang-zedong / test

Created November 5, 2016 07:25

Hello, gist!

puts "Hello, gist!"