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LeetCode-NOTES/Algorithms/396.Rotate-Function/solution.cpp at master · moranzcw/LeetCode-NOTES · GitHub
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LeetCode-NOTES
/
Algorithms
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396.Rotate-Function
/
solution.cpp
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25 lines (25 loc) · 504 Bytes
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LeetCode-NOTES
/
Algorithms
/
396.Rotate-Function
/
solution.cpp
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25 lines (25 loc) · 504 Bytes
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class
Solution
{
public:
int
maxRotateFunction
(vector<
int
>& A)
{
int
n = A.
size
();
if
(n<=
0
)
return
0
;
vector<
int
>
F
(n,
0
);
int
sum =
0
;
for
(
int
i=
0
;i<n;i++)
{
F[
0
] += i*A[i];
sum += A[i];
}
int
max = F[
0
];
for
(
int
i=
1
;i<n;i++)
{
F[i] = F[i-
1
] + sum - A[n-i] - (n-
1
)*A[n-i];
if
(F[i] > max)
max = F[i];
}
return
max;
}
};
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