题目
解题
def threeSum(nums):
nums.sort() # 首先对数组进行排序
result = [] # 用于存储最终结果的列表
for i in range(len(nums) - 2):
if i > 0 and nums[i] == nums[i - 1]:
# 避免重复的三元组
continue
left, right = i + 1, len(nums) - 1
while left < right:
total = nums[i] + nums[left] + nums[right]
if total < 0:
left += 1
elif total > 0:
right -= 1
else:
# 找到一个和为0的三元组
result.append([nums[i], nums[left], nums[right]])
# 跳过重复的元素
while left < right and nums[left] == nums[left + 1]:
left += 1
while left < right and nums[right] == nums[right - 1]:
right -= 1
# 移动到下一个不同的元素
left += 1
right -= 1
return result
# 示例
nums = [-1, 0, 1, 2, -1, -4]
print(threeSum(nums))