jflopezfernandez

"""Utilities for Counting and Testing Prime Numbers.

A significant portion of the material here is thanks to Al Sweigart and their
incredible explanations on prime number sieves from their book, "Cracking Codes
With Python."

You can read the book online here:
  * https://inventwithpython.com/cracking/chapter0.html

You can also purchase a paper copy here:

jflopezfernandez

"""Functions to generate prime numbers efficiently.

Source:
  * https://eli.thegreenplace.net/2023/my-favorite-prime-number-generator
"""

def gen_primes():
    """Generate an infinite sequence of prime numbers."""
    D = {}
    q = 2

jflopezfernandez

#!/bin/bash
#
# Calculate the number of NUMA nodes on the current host.
#
#   iabwi8:~# number-of-numa-nodes
#   4
#
function number-of-numa-nodes() {
  ls --directory /sys/devices/system/node/node* | wc --lines
}

jflopezfernandez

#!/bin/bash
#
# Get the number of hugepages currently configured on the system.
#
# Sample output:
#   Hugepages:
#   Total: 0 (0)
#   Free: 0 (0)
#   Surplus: 0 (0)
#

jflopezfernandez

"""Overview of Plotting in Python Using Matplotlib and Seaborn.

  python3 -m pip install --upgrade pip wheel setuptools packaging
  python3 -m pip install --upgrade numpy scipy matplotlib seaborn

This script also needs FFMPEG on Windows to be able to render animations
as MP4 files (maybe on Linux too, I don't know).
"""

from collections import Counter

jflopezfernandez

#!/usr/bin/bash
#
# Remove color control sequences from terminal output.

sed -r "s/\x1B\[([0-9]{1,3}(;[0-9]{1,2})?)?[mGK]//g"

jflopezfernandez

"""LeetCode Problem 14 - Longest Common Prefix"""

from typing import List, Optional, Text

from absl import app
from absl import flags
from absl import logging
from absl.testing import absltest

def inputs_are_valid(strings: List[Text]) -> bool:

jflopezfernandez

"""LeetCode Problem 2 - Add Two Numbers

This file requires the Abseil python library, absl-py.
"""

from typing import List, Optional, Text

from absl import app
from absl import flags
from absl import logging

jflopezfernandez

#!/usr/bin/bash
#
# This function is meant to be defined or included in a file automatically
# sourced by the shell on startup, such as the ~/.bashrc file.
#
# Once this function is sourced, it can be called like any other bash function,
# and the output looks something like the following.
#
#   2023-05-24-18:03:09.368078818
#

jflopezfernandez

#!/usr/bin/bash
#
# This script takes every integer passed to it and prints it to standard output
# as an integer formatted according to US English convention. That is, numbers
# with more than three digits are printed with every three digits from the right
# separated by a comma.
#
# This command was run via the command-line, not as an actual shell script. This
# gist is just a way for me to remember how I did it.
#