static int contiguousPerfectSquare ( int [ ] arr , int n ) {
  int a ;
  float b ;
  int current_length = 0 ;
  int max_length = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    b = ( float ) Math . sqrt ( arr [ i ] ) ;
    a = ( int ) b ;
    if ( a == b ) current_length ++ ;
    else current_length = 0 ;
    max_length = Math . max ( max_length , current_length ) ;
  }
  return max_length ;
}

static int contiguousPerfectSquare ( int [ ] arr , int n ) { int a ; float b ; int current_length = 0 ; int max_length = 0 ; for ( int i = 0 ; i < n ; i ++ ) { b = ( float ) Math . sqrt ( arr [ i ] ) ; a = ( int ) b ; if ( a == b ) current_length ++ ; else current_length = 0 ; max_length = Math . max ( max_length , current_length ) ; } return max_length ; }
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