zwongeer

/*
The teacher asked us to use the stack to turn the recursive algorithm into non-recursive, so I wrote this.🤣
#1 https://gist.github.com/zwongeer/1def202a5ab8bb44b25c05f470681621
#2
*/
#include <algorithm>
#include <iostream>
#include <memory>
#include <cstdlib>
#include <stack>

zwongeer

/*
The teacher asked us to use the stack to turn the recursive algorithm into non-recursive, so I wrote this.🤣
#1 
*/
#include <algorithm>
#include <iostream>
#include <memory>
#include <cstdlib>
#include <stack>
using namespace std;

zwongeer

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Random;

class UniqueInts implements Iterable<Integer> {
    private int imin;
    private int emax;
    private Random rand;
    private Map<Integer, Integer> trans;

zwongeer

import random

for i in range(7):
        t = random.uniform(36.0,36.6)
        m = str(t)[:4]
        t = random.uniform(36.4,36.9)
        n = str(t)[:4]
        print(f'早:{m}    晚:{n}')

zwongeer

Debian KVM virtual machine

First, download the qcow2 file from https://cloud.debian.org/images/cloud/.

Next, remove the root password.

guestfish --rw -a debian.qcow2
><fs> launch
&gt; list-filesystems

zwongeer

https://askubuntu.com/questions/17791/can-i-downmix-stereo-audio-to-mono 1.Find the name of your audio sink by running

pacmd list-sinks | grep name:

2.Then run this command (taking care to remove the angled brackets from the result of previous command):

pacmd load-module module-remap-sink sink_name=mono master=NAME_OF_AUDIO_SINK_GIVEN_BY_PREVIOUS_COMMAND channels=2 channel_map=mono,mono

or add

zwongeer

// https://leetcode-cn.com/problems/guess-number-higher-or-lower/
/** 
 * Forward declaration of guess API.
 * @param  num   your guess
 * @return 	     -1 if num is lower than the guess number
 *			      1 if num is higher than the guess number
 *               otherwise return 0
 * int guess(int num);
 */

zwongeer

#!/usr/bin/env bash
# !pip install colab_ssh --upgrade
# from colab_ssh import launch_ssh_cloudflared, init_git_cloudflared
# launch_ssh_cloudflared(password="<PUT_YOUR_PASSWORD_HERE>")

# Optional: if you want to clone a Github or Gitlab repository
# repository_url="<PUT_YOUR_REPOSITORY_URL_HERE>"
# init_git_cloudflared(repository_url)

SHELL_FOLDER=$(dirname $(readlink -f "$0"))

zwongeer

#!/usr/bin/env bash
# on ubuntu 18.04
cat << EOF >/etc/apt/source.list
deb http://archive.ubuntu.com/ubuntu bionic main multiverse restricted universe
deb http://archive.ubuntu.com/ubuntu bionic-security main multiverse restricted universe
deb http://archive.ubuntu.com/ubuntu bionic-updates main multiverse restricted universe
EOF

wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
cat << EOF > /etc/apt/sources.list.d/clang.list

zwongeer

#!/usr/bin/env bash
SHELL_FOLDER=$(dirname $(readlink -f "$0"))
#cd $SHELL_FOLDER
error_trap () {
    local lc="$BASH_COMMAND" rc=$?
    echo "Failed:Command [$lc] exited with code [$rc]"
}
exit_trap() {
    true
}