Freestyle Sparring

public class Cashier {


    private int fiftyNotes = 0;
    private int twentyNotes = 0;
    private int tenNotes = 0;
    private int fiveNotes = 0;

    private int cash = 0;

    private int twoPoundsCoins = 0;
    private int onePoundCoins = 0;

    private int totalNotes = 0;
    private int totalCoins = 0;

    public Cashier() {
    }


    public String produceChange(int cash) {

        this.cash = cash;

        while ((cash) > 49) {
            cash -= 50;
            fiftyNotes++;
            totalNotes++;
        }
        while ((cash) > 19) {
            cash -= 20;
            twentyNotes++;
            totalNotes++;
        }
        while ((cash) > 9) {
            cash -= 10;
            tenNotes++;
            totalNotes++;
        }
        while ((cash) > 4) {
            cash -= 5;
            fiveNotes++;
            totalNotes++;
        }
        while ((cash) > 1) {
            cash -= 2;
            twoPoundsCoins++;
            totalCoins++;
        }
        onePoundCoins = cash;
        totalCoins += onePoundCoins;

        return this.toString();

    }

    private void clear() {
        fiftyNotes = 0;
        twentyNotes = 0;
        tenNotes = 0;
        fiveNotes = 0;

        twoPoundsCoins = 0;
        onePoundCoins = 0;
        fiftyPence = 0;
        twentyPence = 0;
        tenPence = 0;
        fivePence = 0;
        twoPence = 0;
        onePence = 0;

        totalNotes = 0;
        totalCoins = 0;

    }

    public String toString() {

        StringBuilder sb = new StringBuilder("");

        if (fiftyNotes > 0) {
            sb.append(fiftyNotes + "x £50 note");
        }
        if (twentyNotes > 0) {
            sb.append((sb.length() > 0 ? ", " : "") + twentyNotes + "x £20 note");
        }
        if (tenNotes > 0) {
            sb.append((sb.length() > 0 ? ", " : "") + tenNotes + "x £10 note");
        }
        if (fiveNotes > 0) {
            sb.append((sb.length() > 0 ? ", " : "") + fiveNotes + "x £5 note");
        }
        if (twoPoundsCoins > 0) {
            sb.append((sb.length() > 0 ? ", " : "") + twoPoundsCoins + "x £2 coin");
        }
        if (onePoundCoins > 0) {
            sb.append((sb.length() > 0 ? ", " : "") + onePoundCoins + "x £1 coin");
        }


        String out =  "For £" + cash + " - change was "  + totalNotes  + (totalNotes == 1 ? " note and " : " notes and ")
                + totalCoins + (totalCoins == 1 ? " coin: " : " coins: ");

        clear();
        return out + sb.toString();
    }
}

function pairs(arr){
  let sorted = arr.sort();
  let length = arr.length;

  for (let i = 0; i < length; i++) {
    if (sorted.includes(arr[i] * -1)) {
      return [sorted[i], sorted[i] * -1];
    }
  }
}

\ First Forth Kumite
: hw ." Hello World!" ;
hw cr

c(52,73,55,26,72,45,80,62,NA,7,NA,87,54,46,85,37,94)

def binary_converter(string):
    result = ""
    if string[0] != '0':
        for character in string:
            result += str(bin(ord(character))[2:].zfill(8)) 
            # So characters can be told apart
            result += " " if character != string[len(string) - 1] else ""
    else:
        # This does the opposite, converting 
        # the output of the above into the original input.
        store = [] # setting up list
        # Sorting numbers into individual items in the list
        for character in string:
            if character != ' ': 
                result += character  
            else: 
                store.append(result)
                result = ""
        store.append(result)
        result = ""
        
        # getting results, aka the orginal string
        for item in store:
            result += chr(int(item, 2))
    
    print(result) # for debugging
    return result

function profilePicture() {
  distance = (x1, y1, x2, y2) => Math.sqrt(Math.pow(x2 - x1, 2) + Math.pow(y2 - y1, 2));
  random = t => t[~~(Math.random() * t.length)];
  var width = 56, height = 32;
  var ratio = height / width;
  var grid = [...Array(height)].map(a => []);
  for (var x = 0; x < width; x++) {
    for (var y = 0; y < height; y++) {
      var isIncluded =
        distance(width * 0.5 * ratio, height * 0.50, (x+.5) * ratio, y + .5) < height * 0.47 &&
        distance(width * 0.6 * ratio, height * 0.45, (x+.5) * ratio, y + .5) >= height * 0.41;
      grid[y].push(isIncluded ? random("£@$%€0&#¥") : ' ');
    }
  }
  return grid.map(a => a.join``).join`\n`;
}

using System;

class Palindrome
{
  public static bool Check(string word){
    for(int i = 0; i < word.Length; i++)
    {
        word = word.ToUpper();
        if(i >= word.Length /2)
        {
            break;
        }
        if(word[i] != word[word.Length - 1 - i])
        {
            return false;
        }
    }
    return true;
  }
}

object Previous {
  def previous(num: Int): Int =
    num-1
}

//

def function():
    answer=a*b
    return answer