Cash Register Project

JavaScript
1

I have been able to get my code to pass all the tests on the JavaScript Algorithms and Data Structures Projects: Cash Register project except for the 5th one, where there is enough money to make change, but not the right kind of coins, so the change cannot be made.

I am getting the right result for this test: status: INSUFFICIENT FUNDS, change: [] and even the web console outputs the right result, but I can’t seem to get the test to pass. Any suggestions?

Here is my code:

function checkCashRegister(price, cash, cid) {

	var money = [["PENNY", 0.01], ["NICKEL", 0.05], ["DIME", 0.1], ["QUARTER", 0.25], ["ONE", 1], ["FIVE", 5], ["TEN", 10], ["TWENTY", 20], ["ONE HUNDRED", 100]];
	
	var cidTotal = 0;
	
	var changeAmt = cash - price;
	var changeArray = [];
	
	var numCoins = 0;
	var tempAmt;
	
	var transaction = {};
	
	function makeTransaction(status, change) {
		return {
			status: status,
			change: change
		};
	}
	
	
	// Calculate amount of money in cash register
	for (let i = 0; i < cid.length; i++) {
		cidTotal += cid[i][1];
	}
	cidTotal = Math.round(cidTotal*100)/100;
	
	// print out
	console.log("cid: " + cid);
	console.log("Cash in Drawer: " + cidTotal);
	console.log("Change Amount: " + changeAmt);
	
	// Calculate the status and the change
	if (changeAmt == cidTotal) {  // the change uses up all the cash in drawer
		
		transaction = makeTransaction("CLOSED", cid);
		
	} else if (changeAmt > cidTotal) { // there isn't enough cash in drawer to make change
		
		transaction = makeTransaction("INSUFFICIENT_FUNDS", []);
		
	} else {	// Make change with cash in drawer  *****************
	
		for (let i = cid.length-1; i >= 0; i--) {
			
			if (cid[i][1] != 0) {
				
				if (cid[i][1] <= changeAmt) {
					if (i == 0) {
						transaction = makeTransaction("INSUFFICIENT FUNDS", changeArray);
						break;
					}
					changeArray.unshift(cid[i]);
					changeAmt = Math.round((changeAmt - changeArray[0][1])*100)/100;
				} else {
					numCoins = Math.floor(changeAmt/(money[i][1]));
					
					if (numCoins != 0) {
						tempAmt = Math.round((numCoins*money[i][1])*100)/100;
						changeArray.unshift([cid[i][0], tempAmt]);	
						changeAmt = Math.round((changeAmt - changeArray[0][1])*100)/100;						
					}				
				}	
				
			}			
			
			if (changeAmt <= 0) {
				break;
			}
			
		}		
		
		if (changeArray[0] == undefined) {
			transaction = makeTransaction("INSUFFICIENT FUNDS", []);
		} else {
			changeArray.reverse();
			transaction = makeTransaction("OPEN", changeArray);
		}
		
		
	}
	
	console.log("Transaction: ");
	console.log(transaction);
	
	console.log("************************");
	
	return transaction;
}
3

Okay, I am really, really kicking myself! I spent hours trying to figure out why the test wasn’t passing. Thank you for noticing. :blush: