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