# 3Sum 👠

Given an integer array nums, return all the triplets `[nums[i], nums[j], nums[k]]`

such that `i != j`

, `i != k`

, and `j != k`

, and `nums[i] + nums[j] + nums[k] == 0`

.

Notice that the solution set must not contain duplicate triplets.

**Example 1:**

**Input:** nums = [-1,0,1,2,-1,-4]

**Output:** [[-1,-1,2],[-1,0,1]]

**Example 2:**

**Input:** nums = []

**Output:** []

**Example 3:**

**Input:** nums = [0]

**Output:** []

**Constraints:**

`0 <= nums.length <= 3000`

`-105 <= nums[i] <= 105`

# Solution

Time Complexity

O(n³)Space Complexity

O(d)where d is the number of possible sets

Time Complexity

O(n²)Space Complexity

O(n + d)where d is the number of possible sets

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