问题:
Given an array of integers, return indices of the two numbers such that they add up to a specific target.
You may assume that each input would have exactly one solution.
Example:
Given nums = [2, 7, 11, 15], target = 9,
Because nums[0] + nums[1] = 2 + 7 = 9,
return [0, 1].
方案:
public class Solution {
public int[] twoSum(int[] nums, int target) {
for(int i=0;i<nums.length;i++)
for(int j=i+1;j<nums.length;j++)
{
if(nums[i]+nums[j]==target)
return new int[]{i,j};
}
return null;
}
}
方法比较简单,适合初学者。