Cash Register-need help

JavaScript
1

Tell us what’s happening:
NEED HELP!
I am trying to figure out the main problem about cash register. I don’t know how to write algorithm for giving change back in certain coins and bills. That is under test 2 and 3. You can see what I have done so far but more is too difficult.
Please if anyone can help me and give more instructions I would be grateful. Thanks

Your code so far


var payment = [
  { name: 'ONE HUNDRED', val: 100.00},
  { name: 'TWENTY', val: 20.00},
  { name: 'TEN', val: 10.00},
  { name: 'FIVE', val: 5.00},
  { name: 'ONE', val: 1.00},
  { name: 'QUARTER', val: 0.25},
  { name: 'DIME', val: 0.10},
  { name: 'NICKEL', val: 0.05},
  { name: 'PENNY', val: 0.01}
];

function checkCashRegister(price, cash, cid) {
  var result = {status : "", change: []} 
  var change = cash - price;
        
    var register = cid.reduce(function(acc, curr) {
    acc += curr[1];
    return acc;
    
  }, 0.0);
                  
      if(register === change){
        result.status = "CLOSED"
        result.change = cid
        return result
      }
      if(register < change){
        result.status = "INSUFFICIENT_FUNDS"
        return result
      }
          
          
            
          

     
      
      
    console.log()
    
  // Here is your change, ma'am.
  
}

// Example cash-in-drawer array:
// [["PENNY", 1.01],
// ["NICKEL", 2.05],
// ["DIME", 3.1],
// ["QUARTER", 4.25],
// ["ONE", 90],
// ["FIVE", 55],
// ["TEN", 20],
// ["TWENTY", 60],
// ["ONE HUNDRED", 100]]

checkCashRegister(19.5, 20, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]]);

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Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/javascript-algorithms-and-data-structures-projects/cash-register/

2

Hint: you will need to check the change you need to give back against how much you have in each value and how much a piece of that value is

So, for example if you need to give back 0.27$ and you have two quarters and a penny (total 0.51$) you can’t because you don’t have enough pennies (as you have 0.25 + 0.25 + 0.01 you can’t get 0.27 combining in any way - but if the change due is 0.26$ you can give back 0.25 in quarters and 0.01 in pennies because you have enough coins)

3

I understand that problem, the thing is I don’t know how to write a code. I too long think about that and still have no idea how to write algorithm.

4

You will need to write it on your own, as this is a final project.
Try first writing pseudo code, as in the logical steps to solve the question
Try to break it down to the smallest possible steps

5

Think back to the Roman Numeral exercise. The concept in that exercise helped me think of ways to solve this exercise.