题解 | #三数之和#
三数之和
https://www.nowcoder.com/practice/345e2ed5f81d4017bbb8cc6055b0b711
class Solution: def threeSum(self , num) : num=sorted(num) res=[] num_len=len(num) for idx in range(len(num)-2): left=idx+1 right=num_len-1 while left<right: if num[idx]+num[left]+num[right]==0 and [num[idx],num[left],num[right]] not in res: res.append([num[idx],num[left],num[right]]) elif num[idx]+num[left]+num[right]>0: right-=1 else: left+=1 return res