Re: [理工] 資料結構消失
我還是不知道n-ki=1是怎麼來的耶,n-ki應該是第k項吧?那怎麼會等於1?
所以效能是把所有k加起來?我完全不懂啊
而且我一開始的想法是
x=n-1
x=n-2
x=n-3
.
.
.
.
x=n-n
T(n)=n^2-(n+1)n/2=O(n^2)
這樣想好像很白痴
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