for each element i in A[n] do
map (A[n],i)
for each element j in B[n] do
index = B[n]
X[index] = map.get(index);
This will traverse both the array once, so O(n+n) = O(n) time.
On Dec 31, 1:44 pm, juver++ <[email protected]> wrote:
> of course, we should keep pair - element and its initial position
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