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| class Solution {
public List<List<Integer>> fourSum(int[] nums, int target) {
List<List<Integer>> ans = new LinkedList<>();
for (int i = 0; i < nums.length; i++) {
for (int j = i + 1; j < nums.length; j++) {
for (int k = j + 1; k < nums.length; k++) {
for (int l = k + 1; l < nums.length; l++) {
if (nums[i] + nums[j] + nums[k] + nums[l] == target) {
ans.add(new LinkedList<>(List.of(nums[i], nums[j], nums[k], nums[l])));
}
}
}
}
}
ans.forEach(list -> list.sort(Integer::compareTo));
return ans.stream().distinct().collect(Collectors.toList());
}
}
|
