human
Give me a code to print matrix elements from top and the other steps required given the following:
Print matrix elements from top | Function to traverse the matrix diagonally upwards.
Stores the maximum size of vector from all row of matrix nums [ ] [ ].
Store elements in desired order.
Store every element on the basis of sum of index ( i + j ).
Print the stored result.
Reverse all sublist.
Driver code.
Given vector of vectors arr.
Function Call"
Solution in Python:
assistant
#Here is code to print matrix elements from top and the other steps required.
 def printDiagonalTraversal ( nums ) :
	max_size = len ( nums )
	for i in range ( len ( nums ) ) :
		if ( max_size < len ( nums [ i ] ) ) :
			max_size = len ( nums [ i ] )
	v = [ [ ] for i in range ( 2 * max_size - 1 ) ]
	for i in range ( len ( nums ) ) :
		for j in range ( len ( nums [ i ] ) ) :
			v [ i + j ] . append ( nums [ i ] [ j ] )
	for i in range ( len ( v ) ) :
		v [ i ] = v [ i ] [ : : - 1 ]
		for j in range ( len ( v [ i ] ) ) :
			print ( v [ i ] [ j ] , end = " ▁ " )
if __name__ == ' _ _ main _ _ ' :
	arr = [ [ 1 , 2 , 3 ] , [ 4 , 5 , 6 ] , [ 7 , 8 , 9 ] ]
	printDiagonalTraversal ( arr )