1. Two Sum

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 new int[2];
    }//twoSum
}//class