public int maxSubArray(int[] nums) {
        int[] dp = new int[nums.length];
        dp[0] = nums[0];
        int max = dp[0];
        for (int i = 1; i < nums.length; ++i) {
            dp[i] = Math.max(nums[i], nums[i] + dp[i - 1]);
            if (dp[i] > max)
                max = dp[i];
        }
        return max;
    }