Sherlock and Watson

Olá,

Estava resolvendo um problema do HackerRank hoje que achei interessante. O nome do problema é Sherlock and Watson (Crcular Array Rotation) e a descrição deleé conforme abaixo:

 

John Watson performs an operation called Right Circular Rotation on an integer array a0,a1 … an-1. Right Circular Rotation transforms the array from a0,a1 … aN-1 to aN-1,a0,… aN-2.He performs the operation K times and tests Sherlock’s ability to identify the element at a particular position in the array. He asks Q queries. Each query consists of one integer x, for which you have to print the element ax.

Input Format

The first line consists of 3 integers N, K and Q separated by a single space.

The next line contains N space separated integers which indicates the elements of the array A.

Each of the next Q lines contain one integer per line denoting x.

Output Format

For each query, print the value in the location in a newline.

Constraints

1 ≤ N ≤ 105

1 ≤ A[i] ≤ 105

1 ≤ K ≤ 105

1 ≤ Q ≤ 500

0 ≤ x ≤ N-1

Sample input

3 2 3

1 2 3

0

1

2

Sample output

2

3

1

Explanation

After one rotation array becomes, 3 1 2.

After another rotation array becomes 2 3 1.

Final array now is 2,3,1.

0th element of array is 2.

1st element of array is 3.

2nd element of array is 1.

O interessante nesse problema é se atentar que se:

  • i > 0 então ai torna-se ai-1
  • i = 0 entao ai torna-se ai+n-1

 

Sendo assim o código que desenvolvi ficou da seguinte forma:

 

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