循环通过生成的字符

Question

public class Driver { 

public static void main(String[] args) { 


    int length=0; 
    int MaxNumber=100; 
    StringBuilder password = new StringBuilder(); 





    do { 
     if (PasswordGenerator.matchLength (length)) { 
      break; 
     } 
     length++; // length is randomly picked 
    } while (length < MaxNumber); // or <100 
    System.out.println("The length of the character string is " + length); 


    int index = 0; 
    char f = 0; 


    for (char d = 0; d < 127; d++) { 
     if(PasswordGenerator.matchCharAt(d, index)) { 
      password.append(d); 
      System.out.println("Hey! Char at " + index + " is " + d); 
      d++; 
     } 
    } 



} 
} 

所以，我已经找到了如何找到我通过循环随机生成的密码的第一个字符，并想知道我怎么能提供它通过使用该循环或找到密码的其他字符另一个。字符遵循循环多长时间，这也是随机生成的。到PasswordGenerator类的文档是在这里。（http://www.technology.heartland.edu/faculty/todds/csci130/assignments/A5_password/doc/index.html）

Answer 1

变化index的价值你试图找到的角色的位置。如果你想找到所有的人则...

for(int j=0; j < length; j++) 
{ 
     for (char d = 0; d < 127; d++) 
     { 
     if(PasswordGenerator.matchCharAt(d, j)) 
     { 
      password.append(d); 
      System.out.println("Hey! Char at " + index + " is " + d); 

      // No sense in incrementing d and going through all of them 
      // You found it already, break this loop 
      break; 
     } 
    } 
}