human
Give me a code to minimum replacements required to make given Matrix palindromic and the other steps required given the following:
Minimum replacements required to make given Matrix palindromic | Function to count minimum changes to make the matrix palindromic.
Rows in the matrix.
Columns in the matrix.
Traverse the given matrix.
Store the frequency of the four cells.
Iterate over the map.
Min changes to do to make all.
Four elements equal.
Make the middle row palindromic.
Make the middle column palindromic.
Prminimum changes.
Given matrix.
Function Call"
How can the above be solved in Python?
assistant
#Here is code to minimum replacements required to make given Matrix palindromic and the other steps required.
 def minchanges ( mat ) :
	N = len ( mat )
	M = len ( mat [ 0 ] )
	ans = 0
	mp = { }
	for i in range ( N // 2 ) :
		for j in range ( M // 2 ) :
			mp [ mat [ i ] [ M - 1 - j ] ] = mp . get ( mat [ i ] [ M - 1 - j ] , 0 ) + 1
			mp [ mat [ i ] [ j ] ] = mp . get ( mat [ i ] [ j ] , 0 ) + 1
			mp [ mat [ N - 1 - i ] [ M - 1 - j ] ] = mp . get ( mat [ N - 1 - i ] [ M - 1 - j ] , 0 ) + 1
			mp [ mat [ N - 1 - i ] [ j ] ] = mp . get ( mat [ N - 1 - i ] [ j ] , 0 ) + 1
			x = 0
			for it in mp :
				x = max ( x , mp [ it ] )
			ans = ans + 4 - x
			mp . clear ( )
	if ( N % 2 == 1 ) :
		for i in range ( M // 2 ) :
			if ( mat [ N // 2 ] [ i ] != mat [ N // 2 ] [ M - 1 - i ] ) :
				ans += 1
	if ( M % 2 == 1 ) :
		for i in range ( N // 2 ) :
			if ( mat [ i ] [ M // 2 ] != mat [ N - 1 - i ] [ M // 2 ] ) :
				ans += 1
	print ( ans )
mat = [ [ 1 , 2 , 3 ] , [ 4 , 5 , 3 ] , [ 1 , 2 , 1 ] ]
minchanges ( mat )