LeetCode Problem | LeetCode Problems For Beginners | LeetCode Problems & Solutions | Improve Problem Solving Skills | LeetCode Problems Java | LeetCode Problems C++
Hello Programmers/Coders, Today we are going to share solutions to the Programming problems of LeetCode Solutions in C++, Java, & Python. At Each Problem with Successful submission with all Test Cases Passed, you will get a score or marks and LeetCode Coins. And after solving maximum problems, you will be getting stars. This will highlight your profile to the recruiters.
In this post, you will find the solution for the Permutations II in C++, Java & Python-LeetCode problem. We are providing the correct and tested solutions to coding problems present on LeetCode. If you are not able to solve any problem, then you can take help from our Blog/website.
Use “Ctrl+F” To Find Any Questions Answer. & For Mobile User, You Just Need To Click On Three dots In Your Browser & You Will Get A “Find” Option There. Use These Option to Get Any Random Questions Answer.
About LeetCode
LeetCode is one of the most well-known online judge platforms to help you enhance your skills, expand your knowledge and prepare for technical interviews.
LeetCode is for software engineers who are looking to practice technical questions and advance their skills. Mastering the questions in each level on LeetCode is a good way to prepare for technical interviews and keep your skills sharp. They also have a repository of solutions with the reasoning behind each step.
LeetCode has over 1,900 questions for you to practice, covering many different programming concepts. Every coding problem has a classification of either Easy, Medium, or Hard.
LeetCode problems focus on algorithms and data structures. Here is some topic you can find problems on LeetCode:
- Mathematics/Basic Logical Based Questions
- Arrays
- Strings
- Hash Table
- Dynamic Programming
- Stack & Queue
- Trees & Graphs
- Greedy Algorithms
- Breadth-First Search
- Depth-First Search
- Sorting & Searching
- BST (Binary Search Tree)
- Database
- Linked List
- Recursion, etc.
Leetcode has a huge number of test cases and questions from interviews too like Google, Amazon, Microsoft, Facebook, Adobe, Oracle, Linkedin, Goldman Sachs, etc. LeetCode helps you in getting a job in Top MNCs. To crack FAANG Companies, LeetCode problems can help you in building your logic.
Link for the Problem – Permutations II– LeetCode Problem
Permutations II– LeetCode Problem
Problem:
Given a collection of numbers, nums
, that might contain duplicates, return all possible unique permutations in any order.
Example 1:
Input: nums = [1,1,2] Output: [[1,1,2], [1,2,1], [2,1,1]]
Example 2:
Input: nums = [1,2,3] Output: [[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]]
Constraints:
1 <= nums.length <= 8
-10 <= nums[i] <= 10
Permutations II– LeetCode Solutions
Permutations II in C++:
class Solution { public: vector<vector<int>> permuteUnique(vector<int>& nums) { vector<vector<int>> ans; sort(begin(nums), end(nums)); dfs(nums, vector<bool>(nums.size()), {}, ans); return ans; } private: void dfs(const vector<int>& nums, vector<bool>&& used, vector<int>&& path, vector<vector<int>>& ans) { if (path.size() == nums.size()) { ans.push_back(path); return; } for (int i = 0; i < nums.size(); ++i) { if (used[i]) continue; if (i > 0 && nums[i] == nums[i - 1] && !used[i - 1]) continue; used[i] = true; path.push_back(nums[i]); dfs(nums, move(used), move(path), ans); path.pop_back(); used[i] = false; } } };
Permutations II in Java:
class Solution { public List<List<Integer>> permuteUnique(int[] nums) { List<List<Integer>> ans = new ArrayList<>(); Arrays.sort(nums); dfs(nums, new boolean[nums.length], new ArrayList<>(), ans); return ans; } private void dfs(int[] nums, boolean[] used, List<Integer> path, List<List<Integer>> ans) { if (path.size() == nums.length) { ans.add(new ArrayList<>(path)); return; } for (int i = 0; i < nums.length; ++i) { if (used[i]) continue; if (i > 0 && nums[i] == nums[i - 1] && !used[i - 1]) continue; used[i] = true; path.add(nums[i]); dfs(nums, used, path, ans); path.remove(path.size() - 1); used[i] = false; } } }
Permutations II in Python:
class Solution: def permuteUnique(self, nums: List[int]) -> List[List[int]]: ans = [] used = [False] * len(nums) def dfs(path: List[int]) -> None: if len(path) == len(nums): ans.append(path) return for i, num in enumerate(nums): if used[i]: continue if i > 0 and nums[i] == nums[i - 1] and not used[i - 1]: continue used[i] = True dfs(path + [num]) used[i] = False nums.sort() dfs([]) return ans
cialis pill tadalafil for women best ed pill for diabetics
cefadroxil 250mg pills cost cefadroxil 250mg buy cheap finasteride
diflucan price ampicillin 500mg usa buy cipro 1000mg
order metronidazole 200mg online bactrim 960mg without prescription generic cephalexin 250mg
order cleocin 300mg sale order erythromycin without prescription online ed pills
buy tamoxifen 10mg generic tamoxifen 20mg usa brand ceftin 500mg
careprost tablet robaxin drug desyrel 100mg for sale
sildenafil 50mg ca sildenafil 100mg pills sildenafil uk
buy accutane 20mg generic amoxil 500mg price purchase azithromycin
buy azithromycin 250mg online neurontin online buy gabapentin 800mg generic
cheap lasix 40mg vibra-tabs pill buy albuterol online
purchase levitra sale plaquenil 200mg canada plaquenil 200mg usa
where can i buy ramipril buy etoricoxib 60mg pills buy etoricoxib generic
buy levitra pills buy cheap generic levitra buy generic plaquenil
asacol drug order astelin generic where to buy avapro without a prescription
benicar without prescription order verapamil 240mg sale divalproex cost
clobetasol generic buy cordarone pills for sale amiodarone 200mg canada
acetazolamide price imdur 40mg for sale buy azathioprine 50mg pill
order generic carvedilol 25mg order cenforce 100mg pills aralen brand
digoxin 250mg pill order digoxin pills purchase molnunat generic
naproxen 250mg for sale order prevacid 15mg generic prevacid 15mg cost
where to buy albuterol without a prescription buy pantoprazole sale generic phenazopyridine 200mg
singulair medication buy avlosulfon 100 mg online order dapsone 100 mg
brand olumiant 4mg atorvastatin 10mg sale lipitor 20mg for sale
order adalat 30mg pills order perindopril 8mg without prescription allegra brand
amlodipine canada purchase amlodipine generic order omeprazole 10mg online cheap