public class Solution {
public int[] TwoSum(int[] nums, int target) {
if(nums == null || nums.Length < 1)
{
return null;
}
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[2]{i, j};
}
}
}
return null;
}
}
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