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Algorithms & data structures medium

Find All Triplets with Sum Zero in Python

This code finds all unique triplets in an array that sum to zero using a sorted array and two-pointer technique.

triplets two-pointers sorting
Python
def find_triplets(nums):
    nums.sort()
    n = len(nums)
    triplets = []
    for i in range(n - 2):
        if i > 0 and nums[i] == nums[i - 1]:
            continue
        left, right = i + 1, n - 1
        while left < right:
            total = nums[i] + nums[left] + nums[right]
            if total == 0:
    …
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