167-Two-Sum-II.java

class Solution {

    public int[] twoSum(int[] numbers, int target) {
        int a_pointer = 0;
        int b_pointer = numbers.length - 1;
        int num_a, num_b;

        while (a_pointer < b_pointer) {
            num_a = numbers[a_pointer];
            num_b = numbers[b_pointer];

            if (num_a + num_b == target) break;

            if (num_a + num_b < target) {
                a_pointer++;
                continue;
            }

            b_pointer--;
        }

        return new int[] { a_pointer + 1, b_pointer + 1 };
    }
}