LeetCode_167. Two Sum II - Input array is sorted

167. Two Sum II - Input array is sorted

Easy

Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number.

The function twoSum should return indices of the two numbers such that they add up to the target, where index1 must be less than index2.

Note:

Your returned answers (both index1 and index2) are not zero-based.
You may assume that each input would have exactly one solution and you may not use the same element twice.

Example:

Input: numbers = [2,7,11,15], target = 9

Output: [1,2]

Explanation: The sum of 2 and 7 is 9. Therefore index1 = 1, index2 = 2.

package leetcode.easy;

public class TwoSumIIInputArrayIsSorted {

	@org.junit.Test

	public void test() {

		int[] numbers = { 2, 7, 11, 15 };

		int target = 9;

		System.out.println(twoSum(numbers, target));

	}

	public int[] twoSum(int[] numbers, int target) {

		for (int i = 0; i < numbers.length - 1; i++) {

			for (int j = i + 1; j < numbers.length; j++) {

				if (numbers[i] + numbers[j] == target) {

					return new int[] { i + 1, j + 1 };

				}

			}

		}

		return new int[] { 0, 0 };

	}

}

巴特西

LeetCode_167. Two Sum II - Input array is sorted

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