167. 两数之和 II - 输入有序数组

    public int[] twoSum2(int[] numbers, int target) {
        int[] rtnIndex = new int[2];
        int low = 0;
        int high = numbers.length - 1;
        while (low < high) {
            int mid = (low + high) / 2;
            if ((numbers[low] + numbers[high]) > target) {
                high--;
            } else if ((numbers[low] + numbers[high]) < target) {
                low++;
            } else {
                rtnIndex[0] = low + 1;
                rtnIndex[1] = high + 1;
                return rtnIndex;
            }
        }
        rtnIndex[0] = low + 1;
        rtnIndex[1] = high + 1;
        return rtnIndex;
    }