static int steps ( int source , int step , int dest ) {
  if ( Math . abs ( source ) > ( dest ) ) return Integer . MAX_VALUE ;
  if ( source == dest ) return step ;
  int pos = steps ( source + step + 1 , step + 1 , dest ) ;
  int neg = steps ( source - step - 1 , step + 1 , dest ) ;
  return Math . min ( pos , neg ) ;
}

static int steps ( int source , int step , int dest ) { if ( Math . abs ( source ) > ( dest ) ) return Integer . MAX_VALUE ; if ( source == dest ) return step ; int pos = steps ( source + step + 1 , step + 1 , dest ) ; int neg = steps ( source - step - 1 , step + 1 , dest ) ; return Math . min ( pos , neg ) ; }
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