Update expenditure-analysis.js

01-js/easy/expenditure-analysis.js

@@ -7,9 +7,34 @@
   Once you've implemented the logic, test your code by running
   - `npm run test-expenditure-analysis`
 */
+function implement(arr, category, price){
+  let flag = false;
+  for(let item of arr){
+    for(let key in item){
+      if(key === category){
+        item[category]+=price;
+        flag = true;
+        break;
+      }
+    }
+  }
+  if(!flag){
+    let obj = new Object();
+    obj[category] = price;
+    arr.push(obj);
+  }
+}
 
 function calculateTotalSpentByCategory(transactions) {
-  return [];
+  let arr = new Array();
+  for(let key of transactions){
+    implement(arr, key.category, key.price)
+  }
+  return arr;
 }
 
-module.exports = calculateTotalSpentByCategory;
+module.exports = {
+  calculateTotalSpentByCategory,
+  implement 
+};
+