01 js assignments

01-js/easy/anagram.js

@@ -5,7 +5,22 @@
 */
 
 function isAnagram(str1, str2) {
-
+  let asciiSumStr1 = 0;
+  let asciiSumStr2 = 0;
+  const string1 = str1.toLowerCase().trim();
+  const string2 = str2.toLowerCase().trim();
+  if (string1.length !== string2.length) {
+    return false;
+  }
+  for (let i = 0; i < string1.length; i++) {
+    asciiSumStr1 = asciiSumStr1 + string1.charCodeAt(i);
+    asciiSumStr2 = asciiSumStr2 + string2.charCodeAt(i);
+  }
+  if (asciiSumStr1 === asciiSumStr2) {
+    return true;
+  } else {
+    return false;
+  }
 }
 
 module.exports = isAnagram;

01-js/easy/expenditure-analysis.js

@@ -14,7 +14,25 @@
 */
 
 function calculateTotalSpentByCategory(transactions) {
-  return [];
+  const spent = [];
+  const catgeoryDetails = {};
+  transactions.forEach((element) => {
+    if (catgeoryDetails[element.category] === undefined) {
+      catgeoryDetails[element.category] = element.price;
+    } else {
+      let totalPrice = catgeoryDetails[element.category];
+      totalPrice = totalPrice + element.price;
+      catgeoryDetails[element.category] = totalPrice;
+    }
+  });
+  for (const key in catgeoryDetails) {
+    const spentObject = {
+      category: key,
+      totalSpent: catgeoryDetails[key],
+    };
+    spent.push(spentObject);
+  }
+  return spent;
 }
 
 module.exports = calculateTotalSpentByCategory;

01-js/easy/findLargestElement.js

@@ -6,7 +6,13 @@
 */
 
 function findLargestElement(numbers) {
-
+  let largestElem = numbers[0];
+  numbers.forEach((element) => {
+    if (element > largestElem) {
+      largestElem = element;
+    }
+  });
+  return largestElem;
 }
 
-module.exports = findLargestElement;
+module.exports = findLargestElement;

01-js/medium/countVowels.js

@@ -6,7 +6,16 @@
 */
 
 function countVowels(str) {
-    // Your code here
+  // Your code here
+  const convertedString = str.toLowerCase();
+  let vowelCount = 0;
+  const vowels = ["a", "e", "i", "o", "u"];
+  for (let i = 0; i < convertedString.length; i++) {
+    if (vowels.includes(convertedString[i])) {
+      vowelCount = vowelCount + 1;
+    }
+  }
+  return vowelCount;
 }
 
-module.exports = countVowels;
+module.exports = countVowels;

01-js/medium/palindrome.js

@@ -4,7 +4,25 @@
 */
 
 function isPalindrome(str) {
-  return true;
+  let isPalindrome = false;
+  // level
+  let reverse = "";
+  for (let i = str.length - 1; i >= 0; i--) {
+    if (str[i].toLowerCase() === "?" || str[i].toLowerCase() === "!") {
+      continue;
+    } else {
+      reverse = reverse + str[i].toLowerCase();
+    }
+  }
+  console.log("reverse", reverse);
+  if (str.toLowerCase() === reverse) {
+    isPalindrome = true;
+  } else {
+    isPalindrome = false;
+  }
+
+  return isPalindrome;
 }
 
 module.exports = isPalindrome;
+isPalindrome("Eva, can I see bees in a cave?");