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