human
Divide array into two parts with equal sum according to the given constraints | Function that checks if the given conditions are satisfied.
To store the prefix sum of the array elements.
Sort the array.
Compute the prefix sum array.
Maximum element in the array.
Variable to check if there exists any number.
Stores the index of the largest number present in the array smaller than i.
Stores the index of the smallest number present in the array greater than i.
Find index of smallest number greater than i.
Find index of smallest number greater than i.
If there exists a number.
If no such number exists print no.
Driver code"
How can the above be solved in Python?
 ... Write me a code to divide array into two parts with equal sum according to the given constraints and the other steps required?
assistant
#Here is code to divide array into two parts with equal sum according to the given constraints and the other steps required.
 def IfExists ( arr , n ) :
	sum = [ 0 ] * n ;
	arr . sort ( ) ;
	sum [ 0 ] = arr [ 0 ] ;
	for i in range ( 1 , n ) :
		sum [ i ] = sum [ i - 1 ] + arr [ i ] ;
	max = arr [ n - 1 ] ;
	flag = False ;
	for i in range ( 1 , max + 1 ) :
		findex = 0 ;
		lindex = 0 ;
		l = 0 ;
		r = n - 1 ;
		while ( l <= r ) :
			m = ( l + r ) // 2 ;
			if ( arr [ m ] < i ) :
				findex = m ;
				l = m + 1 ;
			else :
				r = m - 1 ;
		l = 1 ;
		r = n ;
		flag = False ;
		while ( l <= r ) :
			m = ( r + l ) // 2 ;
			if ( arr [ m ] > i ) :
				lindex = m ;
				r = m - 1 ;
			else :
				l = m + 1 ;
		if ( sum [ findex ] == sum [ n - 1 ] - sum [ lindex - 1 ] ) :
			flag = True ;
			break ;
	if ( flag ) :
		print ( " Yes " ) ;
	else :
		print ( " No " ) ;
if __name__ == " _ _ main _ _ " :
	arr = [ 1 , 2 , 2 , 5 ] ;
	n = len ( arr ) ;
	IfExists ( arr , n ) ;