[Java] exercise question 003: calculate the number of daffodils between 100 and 1000

[Procedure 3]
Question: print out all the "Daffodils". The so-called "Daffodils" refers to a three-digit number, each of which is equal to the number itself. For example, 153 is a "Daffodils" because 153 = the power of 1 + the power of 5 + the power of 3.
1. program analysis: The for loop is used to control the number of 100-999. Each number is used to calculate a single digit, ten digits, and hundreds of digits.

Import Java. util. *; <br/> public class daffodiltest <br/>{< br/> Public static void main (string [] ARGs) <br/>{< br/> int x = 0; <br/> vector v = new vector (); <br/> daffodilnumber DB = new daffodilnumber (); <br/> for (INT I = 100; I <1000; I ++) <br/>{< br/> If (dB. isdaffodilnumber (I) = true) <br/>{< br/> v. add (I); <br/> X ++; <br/>}< br/> system. out. println ("+ x +" Daffodils "between 100 and 1000); <br/> system. out. println ("All daffodils:" + V ); <br/>}< br/> class daffodilnumber <br/>{< br/> int B, S, G; <br/> Public Boolean isdaffodilnumber (int I) <br/>{< br/> Boolean flag = false; <br/> G = I % 10; // single digit <br/> S = (I/10) % 10; // ten digits <br/> B = I/100; // hundreds of digits <br/> if (I = (g * g) + (S * s) + (B * B ))) <br/>{< br/> flag = true; <br/>}< br/> return flag; <br/>}< br/>