I’m working on the ‘Cash Register’ algorithm project, and I have all my tests passing except this one:
checkCashRegister(3.26, 100, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]]) should return {status: "OPEN", change: [["TWENTY", 60], ["TEN", 20], ["FIVE", 15], ["ONE", 1], ["QUARTER", 0.5], ["DIME", 0.2], ["PENNY", 0.04]]}
When I console log the amounts through the code for these parameters, I see that the changeRequired (cash given - price) = 96.74, and the drawerAmountTotal (amount in the drawer) = 335.41.
However, when I run this ‘if’ statement:
'if (changeRequired > drawerAmountTotal){
…
}
it returns ‘true’ and runs the statement. How is this possible? In what universe is 96 larger than 335?
Here’s my code for the problem:
// Create an object that represents each money name
// and its corresponding number value:
const moneyValues = {
"PENNY": .01,
"NICKEL": .05,
"DIME": .1,
"QUARTER": .25,
"ONE": 1.00,
"FIVE": 5.00,
"TEN": 10.00,
"TWENTY": 20.00,
"ONE HUNDRED": 100.00
}
const checkCashRegister = (price, cash, cid) => {
// Initialize answer 'ans' variable as a basic object:
let ans = {
status: '',
change: []
};
// Initialize variable for amount to be given to customer
// (rounded to 2 decimal places):
let changeRequired = (cash - price).toFixed(2);
// Add all amounts in 'cid' to see what the drawer's total is:
let drawerAmountTotal = cid.reduce((accumulator, element) => {
return accumulator + element[1];
}, 0).toFixed(2);
// Initialize an object that will represent each value given in 'cid':
let cashInDrawer = {};
// Add all values of parameter 'cid' to the cashInDrawer object:
for (let i = 0; i < cid.length; i++){
cashInDrawer[cid[i][0]] = cid[i][1];
}
// Initialize obj for cash to give:
let cashToGive = {}
// Fill that with values that === 0
for (let i = 0; i < cid.length; i++){
cashToGive[cid[i][0]] = 0;
}
// Make a big ol' if statement:
// If statement for if there isn't enough money:
console.log(changeRequired)
console.log(drawerAmountTotal)
if(changeRequired > drawerAmountTotal){
ans.status= 'INSUFFICIENT_FUNDS';
// If statement for if the amount in the cash drawer
// is the exact amount the customer needs:
}else if(changeRequired === drawerAmountTotal){
ans.status = 'CLOSED';
ans.change = [...cid];
// if statement for if there is more than enough
// money in the till for the change:
}
else {
// For loop to go through each value (starting with 'ONE HUNDRED')
for(let i = cid.length - 1; i >= 0; i--){
// If changeRequired minus the current value is still >= 0...
if(changeRequired - moneyValues[cid[i][0]] >= 0){
// If there's enough cash in the drawer to withdraw that amount...
if(cashInDrawer[cid[i][0]] - moneyValues[cid[i][0]] >= 0){
// Decrease 'changeRequired' by given value:
changeRequired -= moneyValues[cid[i][0]];
// Decrease 'cashInDrawer' by given value:
cashInDrawer[cid[i][0]] -= moneyValues[cid[i][0]];
// Increase 'CashToGive' by given value:
cashToGive[cid[i][0]] += moneyValues[cid[i][0]]
// Revert 'i' by 1 so we'll test this value again
// (In case we can take out multiple of the same money value)
i++;
}
}
}
// Check if changeRequired got taken down to 0.
// If not, set to "insufficient funds" ans:
if (changeRequired > 0){
ans.status='INSUFFICIENT_FUNDS'
}else{
// set 'ans' variable with 'open' status and new cashInDrawer
// in the form of an array
ans.status = 'OPEN';
for (var val in cashToGive){
if(cashToGive[val] > 0){
ans.change.push([val, cashToGive[val]])
}
}
}
}
// return 'ans' variable:
console.log(ans)
return ans;
}
