☆☆☆https://leetcode.com/problems/3sum/
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https://leetcode.com/problems/3sum/
这道题由于之前写过two sum 可以先固定一个 另外两个用类似twosum的方法
但是niddle就不需要了 因为这道题允许有多个解
我没有写另一个函数 直接把代码都写在一起 不过效率很低
class Solution: # @return a list of lists of length 3, [[val1,val2,val3]] def threeSum(self, num): solution=[] num.sort() length=len(num) for i in range(length-2): for j in range(i+1,length-1): x=0-num[i]-num[j] if x in num[j+1:]: templist=[num[i],num[j],x] #templist.sort() if templist not in solution: solution.append(templist) return solution
一会儿再看看有没有别的方法
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