If found an index smaller than ind and sum not exceeding X then remove index of smallest value from ans and then add index i to ans
while ( ( sum - A . get ( ind ) + A . get ( i ) ) <= X && temp != 0 ) { ans . remove ( 0 ) ; ans . add ( i ) ; temp -- ; sum += ( A . get ( i ) - A . get ( ind ) ) ; } } Collections . sort ( ans ) ; return ans ; }