Make a copy of given array by appending same array elements to itself
circBuff = [ 0 for i in range ( 2 * n ) ] NEW_LINE for i in range ( n ) : NEW_LINE INDENT circBuff [ i ] = arr [ i ] NEW_LINE DEDENT for i in range ( n , 2 * n ) : NEW_LINE INDENT circBuff [ i ] = arr [ i - n ] NEW_LINE DEDENT