LeetCode112|两数之和II-输入有序数组

示例:

输入: numbers = [2, 7, 11, 15], target = 9
输出: [1,2]
解释: 2 与 7 之和等于目标数 9 。因此 index1 = 1, index2 = 2 。

public class TwoSumTest3 {
    public static void main(String[] args) {
        int[] numbers = {2, 7, 11, 15};
        int target = 9;
        int[] twoSum = twoSum(numbers, target);
        for (int num : twoSum
        ) {
            System.out.print(num + "t");
        }
    }

    public static int[] twoSum(int[] numbers, int target) {
        if (numbers == null || numbers.length == 0) {
            return new int[0];
        }
        int i = 0;
        int j = numbers.length - 1;
        while (i < j) {
            if (numbers[i] + numbers[j] == target) {
                return new int[]{i+1, j+1};
            } else if (numbers[i] + numbers[j] < target) {
                i++;
            } else if (numbers[i] + numbers[j] > target) {
                j--;
            }
        }
        return new int[]{-1, -1};
    }
}