(str)
| 20 | |
| 21 | // Task 3: Reverse a String |
| 22 | function reverseString(str){ |
| 23 | let rev=""; |
| 24 | let left=0, right=str.length-1; |
| 25 | while(left<right){ |
| 26 | let temp=str[left]; |
| 27 | rev+=str[right]; |
| 28 | rev+=temp; |
| 29 | left++; |
| 30 | right--; |
| 31 | } |
| 32 | return rev; |
| 33 | } |
| 34 | console.log(reverseString("Hello")); // Output: "olleH" |
| 35 | |
| 36 | // Task 4: Count Vowels |