Johann Chang mrjohannchang
mrjohannchang
/ solution.py
Last active
August 29, 2015 14:22
https://leetcode.com/problems/invert-binary-tree/
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| class Solution: | |
| # @param {TreeNode} root | |
| # @return {TreeNode} | |
| def invertTree(self, root): | |
| if root: | |
| root.left, root.right = self.invertTree(root.right), self.invertTree(root.left) | |
| return root |
mrjohannchang
/ build.log
Created
November 5, 2015 10:45
Cross Compiling Python 3.4.3 for MIPSel with SSL and SQLite3
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| Python build finished successfully! | |
| The necessary bits to build these optional modules were not found: | |
| _bz2 _dbm _gdbm | |
| _lzma _tkinter nis | |
| readline |
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| U-Boot 1.1.3 (Nov 15 2013 - 16:45:31) | |
| Board: Ralink APSoC DRAM: 64 MB | |
| relocate_code Pointer at: 83fb4000 | |
| enable ephy clock...done. rf reg 29 = 5 | |
| SSC disabled. | |
| ****************************** | |
| Software System Reset Occurred | |
| ****************************** | |
| spi_wait_nsec: 29 |
mrjohannchang
/ google-1.py
Last active
May 29, 2017 02:01
https://www.ptt.cc/bbs/Soft_Job/M.1495786228.A.BE0.html
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| def solve(s: str, n: int, iseven: bool): | |
| if n <= 0: | |
| print(s) | |
| return | |
| i: int | |
| for i in range(10) if iseven else range(9, -1, -1): | |
| solve(s + chr(ord('0') + i), n - 1, i % 2 == 0 if iseven else i % 2 == 1) | |
| solve('', int(input()), True) |
mrjohannchang
/ print-asterisk-triangle.py
Last active
August 26, 2019 08:29
Print an asterisk triangle without for-loops
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| #!/usr/bin/env python3 | |
| # -*- coding: utf-8 -*- | |
| import argparse | |
| import logging | |
| import os | |
| import sys | |
| def parse_args() -> argparse.Namespace: |
mrjohannchang
/ fib.go
Last active
September 10, 2019 14:35
[Interview] Please modify the program, so the Fibonacci sequence starts from 0 instead of 1.
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| // Copyright 2012 The Go Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style | |
| // license that can be found in the LICENSE file. | |
| // +build ignore | |
| package main | |
| import "fmt" |
mrjohannchang
/ multiprocessing-queue-manager-client.py
Last active
July 20, 2021 16:40
Python multiprocessing server client inter-process communication (IPC) over Queue. https://stackoverflow.com/a/62608473/1592410
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| import multiprocessing | |
| import multiprocessing.managers | |
| import os | |
| import sys | |
| from typing import AnyStr, Union | |
| class QueueManager(multiprocessing.managers.BaseManager): | |
| def get_queue(self, ident: Union[AnyStr, int, type(None)] = None) -> multiprocessing.Queue: |
mrjohannchang
/ remap-mac-keyboard-modifier-keys-on-windows.reg
Last active
July 7, 2021 15:26
Swap left command and left option keys, remap right command to right alt, remap right option to context menu on Windows
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| Windows Registry Editor Version 5.00 | |
| [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout] | |
| "Scancode Map"=hex:00,00,00,00,00,00,00,00,05,00,00,00,5b,e0,38,00,38,00,5b,e0,38,e0,5c,e0,5d,e0,38,e0,00,00,00,00 | |
| ; Refs: | |
| ; https://superuser.com/a/1202601/270174 | |
| ; https://stackoverflow.com/questions/40777182/how-to-remap-the-menu-key-on-windows |
mrjohannchang
/ swap-caps-lock-and-left-control.reg
Created
October 4, 2021 08:18
Swap left control and caps lock on Windows
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| Windows Registry Editor Version 5.00 | |
| [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout] | |
| "Scancode Map"=hex:00,00,00,00,00,00,00,00,03,00,00,00,1d,00,3a,00,3a,00,1d,00,00,00,00,00 | |
| ; Refs: | |
| ; https://superuser.com/a/1381836 |
mrjohannchang
/ keepawake.ps1
Last active
March 13, 2023 00:05
— forked from jamesfreeman959/keepawake.ps1
A very simple PowerShell script to keep a Windows PC awake and make lync think the user is active on the keyboard
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| # Useful references: | |
| # | |
| # https://superuser.com/questions/992511/emulate-a-keyboard-button-via-the-command-line | |
| # https://ss64.com/vb/sendkeys.html | |
| # https://social.technet.microsoft.com/Forums/windowsserver/en-US/96b339e2-e9da-4802-a66d-be619aeb21ac/execute-function-one-time-in-every-10-mins-in-windows-powershell?forum=winserverpowershell | |
| # https://learn-powershell.net/2013/02/08/powershell-and-events-object-events/ | |
| # | |
| # Future enhancements - use events rather than an infinite loop | |
| $wsh = New-Object -ComObject WScript.Shell | |
| while ($true) { |