text: The value of subset [ i ] [ j ] will be true if there is a subset of set [ 0. . j - 1 ] with sum equal to i
code: let subset = new Array ( sum + 1 ) ; for ( var i = 0 ; i < subset . length ; i ++ ) { subset [ i ] = new Array ( 2 ) ; } let count = new Array ( sum + 1 ) ; for ( var i = 0 ; i < count . length ; i ++ ) { count [ i ] = new Array ( 2 ) ; }