Determine if String Halves Are Alike

Two strings are alike if they have the same number of vowels

Given a string of even length. Split this string into two halves of equal lengths.

Example 1:

Input: s = "book"
Output: Alike

Explanation: a = "bo" and b = "ok". a has 1 vowel and b has 1 vowel. Therefore, they are alike. 

Approach:

Java

import java.util.Arrays;

import java.util.List;

public class HalvesAreAlike {

    static Character[] vovels = { 'a', 'e', 'i', 'o', 

                'u', 'A', 'E', 'I', 'O', 'U' };

    public static void main(String[] args) {

        String s = "book";

        System.out.println(halvesAreAlike(s));

    }

    private static boolean halvesAreAlike(String s) {

        List<Character> v = Arrays.asList(vovels);

        int length = s.length();

        String left = s.substring(0, length / 2);

        String right = s.substring(length / 2, length);

        int lV = 0;

        int rV = 0;

        for (int i = 0; i < length / 2; i++) {

            if (v.contains(left.charAt(i))) {

                lV++;

            }

            if (v.contains(right.charAt(i))) {

                rV++;

            }

        }

        if (lV == rV)

            return true;

        return false;

    }

}

C++

#include <bits/stdc++.h>

using namespace std;

//function to check the

//character is vowel or not

bool isVowel(char ch)

{

  if(ch=='a'||ch=='e'||ch=='i'||ch=='o'||ch=='u')

             return true;

   if(ch=='A'||ch=='E'||ch=='I'||ch=='O'||ch=='U')

             return true;

     return false;

}

//function to check the halves are alike

//or not

bool halvesAreAlike(string s) 

{

        int n=s.size();

        int half=0;

        for(int i=0;i<s.size()/2;i++)

        {

            if(isVowel(s[i]))

                  half++;

        }

      for(int i=s.size()/2;i<s.size();i++)

      {

          if(isVowel(s[i]))

                half--;

      }

      if(half==0)

            return true;

      return false;

    }

int main()

{

   //string length must be

   //even

    string str="book";

    if(halvesAreAlike(str))

      cout<<"Alike\n";

    else

     cout<<"Not alike\n";

  return 0;

}