Create cashregister.js

Author: Umang3072

5. Cash Register/cashregister.js

@@ -0,0 +1,58 @@
+function checkCashRegister(price, cash, cid) {
+  const unitMap = {
+    PENNY: 0.01,
+    NICKEL: 0.05,
+    DIME: 0.1,
+    QUARTER: 0.25,
+    ONE: 1.0,
+    FIVE: 5.0,
+    TEN: 10.0,
+    TWENTY: 20.0,
+    "ONE HUNDRED": 100.0
+  }
+  
+  let totalCID = 0
+  for (let money of cid) {
+    totalCID += money[1]
+  }
+  totalCID = totalCID.toFixed(2)
+  let changeToGive = cash -price
+  const changeArray = []
+
+  if (changeToGive > totalCID) {
+    return {status: "INSUFFICIENT_FUNDS", change: []}
+  } else if (changeToGive.toFixed(2) === totalCID){
+    return {
+      status: "CLOSED",
+      change: cid
+    }
+  } else {
+    cid = cid.reverse()
+    for (let money of cid) {
+      const [unit,value] = money;
+      const addition = [unit,0]
+
+      while(changeToGive >= unitMap[unit] && value > 0) {
+        addition[1] += unitMap[unit]
+        value -= unitMap[unit]
+        changeToGive -= unitMap[unit]
+        changeToGive = changeToGive.toFixed(2)
+      }
+      if(addition[1] > 0) {
+        changeArray.push(addition)
+      }
+    }
+  }
+
+  if(changeToGive > 0) {
+    return {status: "INSUFFICIENT_FUNDS", change: []}
+  }
+
+  return {
+    status: "OPEN",
+    change: changeArray
+  }
+}
+
+
+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]])