checking an integer to see if it contains a zero

Question

Given an integer, how could you check if it contains a 0, using Java?

1 = Good
2 = Good
...
9 = Good
10 = BAD!
101 = BAD!
1026 = BAD!
1111 = Good

How c

Answer 1

Not using Java, but it's not exactly hard to convert from C++ PS. Shame on anyone using string conversion.

bool Contains0InBase10( unsigned int i, unsigned int& next )
{
 unsigned int divisor = 10;
 unsigned int remainder = 0;
 while( divisor <= i )
 {
  unsigned int newRemainder = i%divisor;
  if( newRemainder - remainder == 0)
  {
   // give back information allowing a program to skip closer to the next
   // number that doesn't contain 0
   next = i + (divisor / 10) - remainder;
   return true;
  }
  divisor *= 10;
  remainder = newRemainder;
 }
 return false;
}