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Minimum count of elements required to obtain the given Array by repeated mirror operations | Function to find minimum number of elements required to form A [ ] by performing mirroring operation.
Initialize K.
Odd length array cannot be formed by mirror operation.
Check if prefix of length K is palindrome.
Check if not a palindrome.
If found to be palindrome.
Otherwise.
Return the final answer.
Driver code"
Solution in Python:
assistant
#Here is code to minimum count of elements required to obtain the given Array by repeated mirror operations and the other steps required.
 def minimumrequired ( A , N ) :
	K = N
	while ( K > 0 ) :
		if ( K % 2 ) == 1 :
			ans = K
			break
		ispalindrome = 1
		for i in range ( 0 , K // 2 ) :
			if ( A [ i ] != A [ K - 1 - i ] ) :
				ispalindrome = 0
		if ( ispalindrome == 1 ) :
			ans = K // 2
			K = K // 2
		else :
			ans = K
			break
	return ans
A = [ 1 , 2 , 2 , 1 , 1 , 2 , 2 , 1 ]
N = len ( A )
print ( minimumrequired ( A , N ) )