Array Shuffling solution codeforces

Array Shuffling solution codeforces


oolimry has an array aa of length nn which he really likes. Today, you have changed his array to bb, a permutation of aa, to make him sad.

Because oolimry is only a duck, he can only perform the following operation to restore his array:

  • Choose two integers i,ji,j such that 1i,jn1≤i,j≤n.
  • Swap bibi and bjbj.

The sadness of the array bb is the minimum number of operations needed to transform bb into aa.

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Given the array aa, find any array bb which is a permutation of aa that has the maximum sadness over all permutations of the array aa.


Each test contains multiple test cases. The first line contains a single integer tt (1t1041≤t≤104)  — the number of test cases. The description of the test cases follows.

The first line of each test case contains a single integer nn (1n21051≤n≤2⋅105)  — the length of the array.

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The second line of each test case contains nn integers a1,a2,,ana1,a2,…,an (1ain1≤ai≤n)  — elements of the array aa.

It is guaranteed that the sum of nn over all test cases does not exceed 21052⋅105.


For each test case, print nn integers b1,b2,,bnb1,b2,…,bn — describing the array bb. If there are multiple answers, you may print any.


2 1
1 2 3 3

1 2
3 3 2 1

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