Initialize sum with INT_MIN
let sum = - 1000000 ; for ( let i = 0 ; i < n ; i ++ ) for ( let j = i + 1 ; j < n ; j ++ ) for ( let k = j + 1 ; k < n ; k ++ ) if ( sum < arr [ i ] + arr [ j ] + arr [ k ] ) sum = arr [ i ] + arr [ j ] + arr [ k ] ; return sum ; }