Find the three elements that sum to zeroΒΆ
Write a python class to find the three elements
that sum to zero from a set of N real numbers.
Input array:
[-25, -10, -7, -3, 2, 4, 8, 10]
class py_solution:
def threeSum(self, nums):
nums, result, i = sorted(nums), [], 0
while i < len(nums) - 2:
j, k = i + 1, len(nums) - 1
while j < k:
if nums[i] + nums[j] + nums[k] < 0:
j += 1
elif nums[i] + nums[j] + nums[k] > 0:
k -= 1
else:
result.append([nums[i], nums[j], nums[k]])
j, k = j + 1, k - 1
while j < k and nums[j] == nums[j - 1]:
j += 1
while j < k and nums[k] == nums[k + 1]:
k -= 1
i += 1
while i < len(nums) - 2 and nums[i] == nums[i - 1]:
i += 1
return result
print(py_solution().threeSum([-25, -10, -7, -3, 2, 4, 8, 10]))
Output:
[[-10, 2, 8], [-7, -3, 10]]