1-Two-Sum.java

class Solution {
    public int[] twoSum(int[] nums, int target) {
        int[] res = new int[2];
        for(int i = 0; i<nums.length;i++)
        {
            for(int j = i+1; j<nums.length;j++)
            {
                if (nums[i]+nums[j]==target&& i!=j)
                {
                    res[0]=i;
                    res[1]=j;
                    return res;
                }
            }
        }
        
        return null;
    }
}