Tell us what’s happening:
can someone please help me on this project challenge?
Your code so far
// Create an array of objects which hold the denominations and their values
var denom = [
{ 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 output = { status: null, change: [] };
var change = cash - price;
// Transform CID array into drawer object
var register = cid.reduce(function(acc, curr) {
acc.total += curr[1];
acc[curr[0]] = curr[1];
return acc;
}, { total: 0 });
// Handle exact change
if (register.total === change) {
output.status = 'CLOSED';
output.change = cid;
return output;
}
// Handle obvious insufficient funds
if (register.total < change) {
output.status = 'INSUFFICIENT_FUNDS';
output.change = [];
return output;
}
// Loop through the denomination array
var change_arr = denom.reduce(function(acc, curr) {
var value = 0;
// While there is still money of this type in the drawer
// And while the denomination is larger than the change remaining
while (register[curr.name] > 0 && change >= curr.val) {
change -= curr.val;
register[curr.name] -= curr.val;
value += curr.val;
}
// Add this denomination to the output only if any was used.
if (value > 0) {
acc.push([ curr.name, value ]);
}
return acc; // Return the current change_arr
}, []); // Initial value of empty array for reduce
// Here is your change, ma'am.
output.status = 'OPEN';
output.change = change_arr;
return output;
}
console.log(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:
