abadfish

import React, { useState, useCallback } from 'react'
export const useStatePair = (initial) => {
	const [[prev, current], setPair] = useState([undefined, initial])
	const setValue = useCallback(
		next => setPair([current, next]),
		[current]
	)
	return [prev, current, setValue]
}

abadfish

number_list = [4, 3, 33, 237, 2, 95, 17, 6, 67, 9, 19, 54, 8, 18, 25, 31, 1, 101, 234, 236, 100, 63, 68, 69]
input = 2

def find_pairs(array)
    pairs = []
    array.each_with_index do |px1, i|
       for px2 in array[i+1..-1]
       potential_difference1 = px2 - px1
       potential_difference2 = px1 - px2
        input = 2

abadfish

def biggest_loss(prices)
  max_loss = 0
  
  prices.each_with_index do |px1, day|          # n days as index
    for px2 in prices[day+1..-1]                # iterate through all days once
      potential_loss = px1 - px2                # buy at price 1 and sell at price 2
        if potential_loss > max_loss
          max_loss = potential_loss
        end
      end

abadfish

[
  {
    type: "button"
    icon: "octoface"
    tooltip: "Open in Github"
    callback: "open-on-github:file"
  }
  {
    type: "button"
    icon: "document"