public static boolean canBeMapped ( String s1 , int l1 , String s2 , int l2 ) {
  if ( l1 != l2 ) return false ;
  int [ ] freq1 = new int [ MAX ] ;
  int [ ] freq2 = new int [ MAX ] ;
  for ( int i = 0 ;
  i < l1 ;
  i ++ ) freq1 [ s1 . charAt ( i ) - 'a' ] ++ ;
  for ( int i = 0 ;
  i < l2 ;
  i ++ ) freq2 [ s2 . charAt ( i ) - 'a' ] ++ ;
  for ( int i = 0 ;
  i < MAX ;
  i ++ ) {
    if ( freq1 [ i ] == 0 ) continue ;
    boolean found = false ;
    for ( int j = 0 ;
    j < MAX ;
    j ++ ) {
      if ( freq1 [ i ] == freq2 [ j ] ) {
        freq2 [ j ] = - 1 ;
        found = true ;
        break ;
      }
    }
    if ( ! found ) return false ;
  }
  return true ;
}

public static boolean canBeMapped ( String s1 , int l1 , String s2 , int l2 ) { if ( l1 != l2 ) return false ; int [ ] freq1 = new int [ MAX ] ; int [ ] freq2 = new int [ MAX ] ; for ( int i = 0 ; i < l1 ; i ++ ) freq1 [ s1 . charAt ( i ) - ' a ' ] ++ ; for ( int i = 0 ; i < l2 ; i ++ ) freq2 [ s2 . charAt ( i ) - ' a ' ] ++ ; for ( int i = 0 ; i < MAX ; i ++ ) { if ( freq1 [ i ] == 0 ) continue ; boolean found = false ; for ( int j = 0 ; j < MAX ; j ++ ) { if ( freq1 [ i ] == freq2 [ j ] ) { freq2 [ j ] = - 1 ; found = true ; break ; } } if ( ! found ) return false ; } return true ; }
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