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g0001_0100.s0015_3sum.readme.md Maven / Gradle / Ivy

15\. 3Sum

Medium

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