Maximum Score After Splitting a String

import { range } from '@algorithm/lib';
 
export function maxScore(s: string): number {
  const n = s.length;
  const totalScore = s.replace(/0/g, '').length;
  let leftScore = s[0] === '0' ? 1 : 0;
  let rightScore = totalScore + leftScore - 1;
 
  let answer = leftScore + rightScore;
  for (const i of range(1, n - 2)) {
    const score = parseInt(s[i]);
    leftScore += Math.abs(score - 1);
    rightScore -= score;
    answer = Math.max(answer, leftScore + rightScore);
  }
  return answer;
}