Driver code
var A = [ [ 1 , 1 , 1 , 1 ] , [ 2 , 2 , 2 , 2 ] , [ 3 , 3 , 3 , 3 ] , [ 4 , 4 , 4 , 4 ] ] ; var B = [ [ 1 , 1 , 1 , 1 ] , [ 2 , 2 , 2 , 2 ] , [ 3 , 3 , 3 , 3 ] , [ 4 , 4 , 4 , 4 ] ] ; var C = Array . from ( Array ( N ) , ( ) => Array ( N ) ) ; var i , j ; subtract ( A , B , C ) ; document . write ( " " + " " ) ; for ( i = 0 ; i < N ; i ++ ) { for ( j = 0 ; j < N ; j ++ ) document . write ( C [ i ] [ j ] + " " ) ; document . write ( " " ) ; }