P486. 预测赢家

486. 预测赢家

class Solution {
    public boolean PredictTheWinner(int[] nums) {
        return total(nums, 0, nums.length - 1, 1) >= 0;
    }

    public int total(int[] nums, int start, int end, int turn) {
        if (start == end) {
            return nums[start] * turn;
        }
        int scoreStart = nums[start] * turn + total(nums, start + 1, end, -turn);
        int scoreEnd = nums[end] * turn + total(nums, start, end - 1, -turn);
        return Math.max(scoreStart * turn, scoreEnd * turn) * turn;
//        if(turn == 1){
//            return Math.max(scoreStart ,scoreEnd );
//        }else{
//            return Math.min(scoreStart ,scoreEnd );
//        }
    }
}