Ron Erlih ronerlih

## chat_links.md

      
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                ronerlih
                / chat_links.md
            
            
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              January 30, 2024 06:04
            
              
                SC teachers chat, Cryptography and decentralized computing today 
              
          
    About the Ethereum foundation
speedrunethereum

  
## network-cases-in-life.md

      
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                ronerlih
                / network-cases-in-life.md
            
            
              Created
              September 22, 2021 22:12
            
          
    Network cases


Water_system


electrical_power_system


internet


..and computer


## remove_node_modules.sh
# From: https://stackoverflow.com/questions/42950501/delete-node-modules-folder-recursively-from-a-specified-path-using-command-line

find . -name 'node_modules' -type d -prune -exec rm -rf '{}' +

## map.js
Number.prototype.map = function (in_min, in_max, out_min, out_max) {
  return (this - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}

## numberOfCombinations.md

      
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                ronerlih
                / numberOfCombinations.md
            
            
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              May 25, 2021 14:58
            
              
                Number Of Combinations
              
          
    Number of Combinations nCr = r * (n - r)!


n = Number of samples (elements in an array)
r = Number of sample points in each combination ( make combinations of 3 (r) groups from 9(n) members)

https://www.calculatorsoup.com/calculators/discretemathematics/combinations.php

  
## rotateArrXor.c
/*  The code allows rotation of an 1D array (right and left)
    using XOR operator

    ie. Shifts elements of an Array to left or right directions,
    wraps the elements circularly.
*/

#include <stdio.h>

int arr[]={1,2,3,4,5,6,7,8,9,10};

## README-Template.md

      
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                ronerlih
                / README-Template.md
            
            
              Created
              April 3, 2021 03:39
                — forked from PurpleBooth/README-Template.md
            
              
                A template to make good README.md
              
          
    Project Title

One Paragraph of project description goes here
Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.
Prerequisites
	# From: https://stackoverflow.com/questions/42950501/delete-node-modules-folder-recursively-from-a-specified-path-using-command-line

	find . -name 'node_modules' -type d -prune -exec rm -rf '{}' +
	Number.prototype.map = function (in_min, in_max, out_min, out_max) {
	return (this - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
	}
	/* The code allows rotation of an 1D array (right and left)
	using XOR operator

	ie. Shifts elements of an Array to left or right directions,
	wraps the elements circularly.
	*/

	#include <stdio.h>

	int arr[]={1,2,3,4,5,6,7,8,9,10};