1525. Number of Good Ways to Split a String - LeetCode Solution

class Solution:
    
    def checkForSame(self, a, b):
        count_a = 0
        count_b = 0
        
        for i in range(len(a)):
            if a[i]>0:
                count_a+=1
            if b[i]>0:
                count_b+=1
        return count_a == count_b
    
    def numSplits(self, s: str) -> int:
        a = [0] * 27
        b = [0] * 27
        ans= 0
        for i in range(len(s)):
            a[ord(s[i]) - 97]+=1
        
        for i in range(len(s)):
            ind = ord(s[i]) - 97
            a[ind] -=1
            b[ind]+=1
            if self.checkForSame(a, b):
                ans+=1
        return ans