human
Give me a code to maximum number of envelopes that can be put inside other bigger envelopes and the other steps required given the following:
Maximum number of envelopes that can be put inside other bigger envelopes | Function that returns the maximum number of envelopes that can be inserted into another envelopes.
Number of envelopes.
Sort the envelopes in non - decreasing order.
Initialize dp [ ] array.
To store the result.
Loop through the array.
Find envelopes count for each envelope.
Store maximum envelopes count.
Return the result.
Driver Code.
Given the envelopes.
Function Call"
How can the above be solved in Python?
assistant
#Here is code to maximum number of envelopes that can be put inside other bigger envelopes and the other steps required.
 def maxEnvelopes ( envelopes ) :
	N = len ( envelopes )
	if ( N == 0 ) :
		return N
	envelopes = sorted ( envelopes )
	dp = [ 0 ] * N
	max_envelope = 1
	dp [ 0 ] = 1
	for i in range ( 1 , N ) :
		dp [ i ] = 1
		for j in range ( i ) :
			if ( envelopes [ i ] [ 0 ] > envelopes [ j ] [ 0 ] and envelopes [ i ] [ 1 ] > envelopes [ j ] [ 1 ] and dp [ i ] < dp [ j ] + 1 ) :
				dp [ i ] = dp [ j ] + 1
		max_envelope = max ( max_envelope , dp [ i ] )
	return max_envelope
if __name__ == ' _ _ main _ _ ' :
	envelopes = [ [ 4 , 3 ] , [ 5 , 3 ] , [ 5 , 6 ] , [ 1 , 2 ] ]
	print ( maxEnvelopes ( envelopes ) )