Answered: Given an integer array nums, return all…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

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.

This time, your problem has additional details:

Constraints:

The solution set must not contain duplicate triplets.
The order of the output and the order of the triplets does not matter.
3 <= nums.length <= 3000
-10⁵ <= nums[i] <= 10⁵

Function definition for Java:

public List<List<Integer>> threeSum(int[] nums) {

// Your code here

}

Function definition for Python:

def threeSum(self, nums: List[int]) -> List[List[int]]:

#Your code here

Announced Test Cases:

Input: nums = [0,1,1] Output: [] Explanation: The only possible triplet does not sum up to 0.

Input: nums = [-5,0,5,10,-10,0]
Output: [[-10,0,10],[-5,0,5]]
Explanation: There are two possible combinations of triplets that satisfy: (-5,0,5) and (-10,0,10).

Hint: There are 3 well-known ways to solve this problem!

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