Reverse Integer

public static int reverse( int x ) {
    if( x == Integer.MIN_VALUE ) return 0;
    int sign = x > 0 ? 1 : -1;
    x = Math.abs( x );

    int res = 0;
    while( x != 0 ) {
        if( (res > Integer.MAX_VALUE/10) || 
                (res==Integer.MAX_VALUE/10 && x%10>=7) )
            return 0;
        res = res*10 + x%10;
        x /= 10;
    }

    return sign*res;
}