Added Palindrome

01-js/easy/anagram.js

@@ -6,9 +6,21 @@
   Once you've implemented the logic, test your code by running
   - `npm run test-anagram`
 */
+function sort(str){
+   let arr = str.split("");
+   arr.sort();
+   let ans = arr.join("");
 
+  return ans;
+}
 function isAnagram(str1, str2) {
 
+  if(sort(str1.toLowerCase())==sort(str2.toLowerCase())){
+    return true;
+  }
+  else {
+    return false;
+  } 
 }
 
 module.exports = isAnagram;

01-js/easy/expenditure-analysis.js

@@ -9,7 +9,52 @@
 */
 
 function calculateTotalSpentByCategory(transactions) {
-  return [];
+
+  let arr = {};
+  let size = Object.keys(transactions).length;
+  for(let i=0;i<size;i++){
+    let t = transactions[i];
+    if(arr[t.category]){
+        arr[t.category]=arr[t.category]+t.price;
+    }
+    else {
+        arr[t.category]=t.price;
+    }   
+  }
+  let keys=Object.keys(arr);
+  let ans = [];
+  for(let i=0;i<keys.length;i++){
+    let category=keys[i];
+
+    let obj = {
+      category:category,
+      totalSpent:arr[category]
+    }
+
+     ans.push(obj);
+     console.log(ans);
+   }
+   return ans;
 }
 
 module.exports = calculateTotalSpentByCategory;
+
+// let transactions =[
+//   {itemName:"Samosa", 
+//     category:"Food", 
+//     price:15, 
+//     timestamp:38443 },
+//     {itemName:"Mirinda", 
+//       category:"Drink", 
+//       price:35, 
+//       timestamp:3483 },
+//       {itemName:"Fruti",
+//        category:"Drink",
+//        price:20,
+//       timestamp:8349}
+// ]
+// let ans = calculateTotalSpentByCategory(transactions)
+// console.log(ans);
+// console.log(calculateTotalSpentByCategory(transactions));
+
+

01-js/medium/palindrome.js

@@ -7,7 +7,20 @@
 */
 
 function isPalindrome(str) {
+  let s = str ;
+  s= s.toLowerCase();
+  str = str.toLowerCase();
+  let a = str.length-1;
+  for(let i = 0;i<a/2;i++){
+    let temp = str[i];
+    str[i]=str[a-i];
+    str[a-i]=temp;
+  }
+  if(s!=str){
+    return false;
+  }
   return true;
 }
 
 module.exports = isPalindrome;
+isPalindrome("hello help me")

01-js/medium/times.js

@@ -8,5 +8,8 @@ Hint - use Date class exposed in JS
 */
 
 function calculateTime(n) {
-    return 0.01;
-}
+
+   let ans = new Date();
+   console.log(ans);
+}
+calculateTime(1);