26 lines
898 B
Python
26 lines
898 B
Python
# return a list of lists of length 3
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def three_Sum(num):
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if len(num)<3: return []
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num.sort()
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result=[]
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for i in range(len(num)-2):
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left=i+1
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right=len(num)-1
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if i!=0 and num[i]==num[i-1]:continue
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while left<right:
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if num[left]+num[right]==-num[i]:
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result.append([num[i],num[left],num[right]])
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left=left+1
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right=right-1
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while num[left]==num[left-1] and left<right:left=left+1
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while num[right]==num[right+1] and left<right: right=right-1
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elif num[left]+num[right]<-num[i]:
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left=left+1
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else:
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right=right-1
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return result
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nums1=[-1,0,1,2,-1,-4]
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nums2 = [-25,-10,-7,-3,2,4,8,10]
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print(three_Sum(nums1))
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print(three_Sum(nums2)) |