Soluções finais

n5/cashRegister.js

@@ -0,0 +1,59 @@
+function checkCashRegister(price, cash, cid) {
+  let objt = 
+  {
+    status: "", 
+    change: []
+  };
+
+  const unit = {
+    "PENNY": 0.01,
+    "NICKEL": 0.05,
+    "DIME": 0.1,
+    "QUARTER": 0.25,
+    "ONE": 1,
+    "FIVE": 5,
+    "TEN": 10,
+    "TWENTY": 20,
+    "ONE HUNDRED": 100,
+  }
+
+  let retorno = cash - price;
+
+  let somacid = cid.reduce((acc, curr) => acc + curr[1], 0);
+let change = [];
+let i;
+for(i = cid.length-1; i>=0; i--){
+  let moeda = cid[i][0];
+  let valorcid = cid[i][1];
+  let valorunit = unit[moeda];
+  let x = 0;
+  while(retorno >= valorunit && valorcid >0){
+    retorno -= valorunit;
+    retorno = retorno.toFixed(2);
+    valorcid -= valorunit;
+    x++;
+  }
+  if(x>0){
+    change.push([moeda,(valorunit*x)]);
+  }
+
+}
+let somafinal = change.reduce((acc, curr) => acc + curr[1], 0);
+somafinal = somafinal - somacid;
+
+
+
+if(retorno > 0){
+  objt.status="INSUFFICIENT_FUNDS";
+  objt.change=[];
+}else if(somafinal == retorno){
+  objt.status="CLOSED";
+  objt.change=cid;
+}else{
+  objt.status="OPEN";
+  objt.change=change;
+}
+  return objt;
+}
+
+checkCashRegister(19.5, 20, [["PENNY", 0.5], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 0], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]]);