3Sum

Given a list of integers, return a list containing all unique triplets in the list such that the sum of the triplet is zero. Each triplet must be sorted in ascending order, and the resulting list must be sorted lexicographically.

Parameter

  • nums: a list of integers

Result

  • A list of triplets containing all unique triplets that sums up to zero, sorted.

Examples

Example 1

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

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

Example 2

Input: nums = [1, -1, 2, -2, 3, -3, 4, -4]

Output: [[-4, 1, 3], [-3, -1, 4], [-3, 1, 2], [-2, -1, 3]]

Try it yourself

Solution

Title

Script

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Contrary to popular belief, Lorem Ipsum is not simply random text.

  >>> a = [1, 2, 3]
  >>> a[-1]
  3

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