python3

javascript

java

Determine if String Halves Are Alike

You are given a string `s` of even length. Split this string into two halves of equal lengths and let `a` be the first half and `b` be the second half.

Two strings are alike if they have the same number of vowels ('a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U'). Notice that s contains uppercase and lowercase letters.

Return `1` if a and b are **alike**. Otherwise, return `0`.

### Input Format:
First parameter: String `s`.

### Output Format:
Return the number.
 

### Example 1:
```
Input:
book
Output: 
1
Explanation: a = "bo" and b = "ok". a has 1 vowel and b has 1 vowel. Therefore, they are alike.
```

### Example 2:
```
Input: 
textbook
Output: 
0
Explanation: a = "text" and b = "book". a has 1 vowel whereas b has 2. Therefore, they are not alike.
Notice that the vowel o is counted twice.
 ```

### Constraints:

+ 2 <= `s.length` <= 1000
+`s.length` is even.
+ `s` consists of uppercase and lowercase letters.
+ Expected Time Complexity - O(n)
+ Expected Space Complexity - O(1)

static int solve(String s){
//CODE HERE 
}