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Max Voitko mvoitko

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@mvoitko
mvoitko / copy.sh
Last active Jan 12, 2021
Copy SSh key to a buffer
View copy.sh
xclip -sel clip < ~/.ssh/id_rsa.pub
@mvoitko
mvoitko / template.sh
Created Jul 7, 2020
Bash script template
View template.sh
#!/bin/bash
################################################################################
# scriptTemplate
################################################################################
################################################################################
################################################################################
# #
# Copyright (C) 2020 Maksym Voitko #
# max.voitko@gmail.com #
@mvoitko
mvoitko / 📊 Weekly development breakdown
Last active Oct 29, 2020
Dynamically updated Activity
View 📊 Weekly development breakdown
Terraform 3 hrs 57 mins █████████▍░░░░░░░░░░░ 45.0%
YAML 2 hrs 44 mins ██████▌░░░░░░░░░░░░░░ 31.2%
Bash 51 mins ██░░░░░░░░░░░░░░░░░░░ 9.7%
Python 40 mins █▌░░░░░░░░░░░░░░░░░░░ 7.7%
Other 25 mins █░░░░░░░░░░░░░░░░░░░░ 4.9%
@mvoitko
mvoitko / Huffman.java
Created Feb 4, 2020
Huffman coding algorithm
View Huffman.java
// При кодировании информации каждый символ заменяется на свой код.
// Декодирование для префиксных кодов однозначно и выполняется слева направо.
// Чтобы эффективно реализовать процесс декодирования, необходимо хранить информацию о коде в удобной форме.
// Например, можно представить код в виде двоичного дерева, листья которого соответствуют кодируемым символам.
// А путь от вершины дерева до кодируемого символа определяет кодирующую последовательность битов: поворот налево дает 0, направо — 1.
import java.io.File;
import java.io.FileNotFoundException;
import java.util.HashMap;
import java.util.Map;
@mvoitko
mvoitko / sys_design_flow.txt
Last active Feb 9, 2020
System Design Flow
View sys_design_flow.txt
Step 1. Requirements clarifications:
1.1 Define use cases with interviewers help.
Who is going to use it?
How are they going to use it?
What does the system do?
What are the inputs and outputs of the system?
1.2 Ask about additional features.
1.3 Remove items that interviewer deems out of scope.
1.4 Assume high availability required. Add as a use case.
@mvoitko
mvoitko / read_ints.py
Created Nov 3, 2019
Reading int input for HackerRank
View read_ints.py
def read_tokens():
return input().strip().split()
def read_ints():
return [int(s) for s in read_tokens()]
a, = read_ints() # 1 int
a, b, c = read_ints() # several
View map_bin_search_res.py
import bisect
# very useful for the following kind of data:
# https://taxfoundation.org/2016-tax-brackets/
cuts = [60, 70, 80, 90]
grades = 'FDCBA'
[grades[bisect.bisect(cuts, score)] for score in [32, 64, 70, 85, 90, 99, 100]]
View bubbleSort.cpp
void bubbleSort(int[] a)
{
int n = a.length;
for (int j = 0; j < n - 1; ++j)
{
for (int i = 0; i < n - j - 1; ++i)
{
if (a[i] > a[i+1])
{
swap(a, i, i+1);
@mvoitko
mvoitko / LRU_Cache.py
Last active Oct 30, 2019
LRU Cache implemented with Doubly Linked List with sentinels and Hash Map.
View LRU_Cache.py
from collections import deque
from dataclasses import dataclass
class LRUCache:
@dataclass
class Node:
"""Doubly Linked List (DLL) Node class to store value to be cached"""
key: int = None
val: int = None
View exception.groovy
changed: [localhost] => (item={u'folder': u'org/jenkins-ci/ui', u'version': u'1.1', u'name': u'ace-editor'})
failed: [localhost] (item={u'version': u'2.28.1', u'name': u'allure-jenkins-plugin'}) => {"changed": true, "cmd": ["java", "-jar", "/opt/jenkins-cli.jar", "-i", "/var/lib/jenkins/.ssh/jenkins_deploy_key", "-s", "http://localhost:8080/", "-remoting", "install-plugin", "https://repo.jenkins-ci.org/releases/org/jenkins-ci/plugins/allure-jenkins-plugin/2.28.1/allure-jenkins-plugin-2.28.1.hpi", "-name", "allure-jenkins-plugin"], "delta": "0:00:02.250731", "end": "2019-10-22 15:36:35.991978", "item": {"name": "allure-jenkins-plugin", "version": "2.28.1"}, "msg": "non-zero return code", "rc": 1, "start": "2019-10-22 15:36:33.741247", "stderr": "\nERROR: Unexpected exception occurred while performing install-plugin command.\njava.io.FileNotFoundException: https://repo.jenkins-ci.org/releases/org/jenkins-ci/plugins/allure-jenkins-plugin/2.28.1/allure-jenkins-plugin-2.28.1.hpi\n\tat sun.net.www.protocol.http.Htt