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What is a code to minimize count of array elements to be removed such that at least K elements are equal to their index values and the other steps required given the following:
Minimize count of array elements to be removed such that at least K elements are equal to their index values | Function to minimize the removals of array elements such that atleast K elements are equal to their indices.
Store the array as 1 - based indexing Copy of first array.
Make a dp - table of ( N * N ) size.
Delete the current element.
Take the current element.
Check for the minimum removals.
Driver Code"
Solution in Python:
assistant
#Here is code to minimize count of array elements to be removed such that at least K elements are equal to their index values and the other steps required.
 def MinimumRemovals ( a , N , K ) :
	b = [ 0 for i in range ( N + 1 ) ]
	for i in range ( N ) :
		b [ i + 1 ] = a [ i ]
	dp = [ [ 0 for i in range ( N + 1 ) ] for j in range ( N + 1 ) ]
	for i in range ( N ) :
		for j in range ( i + 1 ) :
			dp [ i + 1 ] [ j ] = max ( dp [ i + 1 ] [ j ] , dp [ i ] [ j ] )
			dp [ i + 1 ] [ j + 1 ] = max ( dp [ i + 1 ] [ j + 1 ] , dp [ i ] [ j ] + ( 1 if ( b [ i + 1 ] == j + 1 ) else 0 ) )
	j = N
	while ( j >= 0 ) :
		if ( dp [ N ] [ j ] >= K ) :
			return ( N - j )
		j -= 1
	return - 1
if __name__ == ' _ _ main _ _ ' :
	arr = [ 5 , 1 , 3 , 2 , 3 ]
	K = 2
	N = len ( arr )
	print ( MinimumRemovals ( arr , N , K ) )