Using a for loop to print a pattern in Java [closed]

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I am trying to print out this pattern using a for loop in Java but I am kind of stuck.

zzzzz   
azzzz  
aazzz  
aaazz  
aaaaz  
aaaaa  

I can print:

 a  
 aa  
 aaa  
 aaaa  
 aaaaa  

using:

String i = " ";   
int a = 0;  
for (i="a";i.length()<=5;i=i+"a")  
    System.out.println(i);

and

 zzzzz  
 zzzz  
 zzz  
 zz  
 z  

using:

String i = " ";   
for (i="zzzzz";i.length()>0;i=i.substring(0,i.length()-1))  
    System.out.println(i); 

But I can't figure out how to combine them. I was thinking about replacing the substring of i and increasing the value of the end index by one 开发者_如何学运维everytime but not sure of to code it. I started with something like this:

String i = " ";  
String b = " ";  
for (i="zzzzz";i="aaaaa";i=i.replace(i.substring(0,))  
    System.out.println(i);  

Any ideas?

---

Pseudocode :

for(i <- 0 to 5) {
  print( i times "a" followed by (5 - i) times "z")
  print a new line
}

Now implement this in Java.

---

You can increment or decrement more than one variable with the loop

for (int a = 0, z = 5; a <= 5 ; a++, z-- )
{
  System.out.println(a+" "+z);
}

would output

0 5
1 4
2 3
3 2
4 1
5 0

---

In java:

public class Pattern {

    public static void main(String [] args) {

        for(int i=0;i<6;i++) { //This works out the number of lines
            String line = "";
                for(int a=0;a<i;a++) {
                    line+="a";
                }

                for(int z=0;z<(5-i);z++) {
                    line+="z";
                }

                System.out.println(line);       
        }

    }

}

---

Z = 5
A = 0

while ( Z >= 0 )
{
  for ( i = 0; i < A; i++ ) print 'A';
  for ( i = 0; i < Z; i++ ) print 'Z';
  print newline;
  ++A;
  --Z;
}

is one way.

---

String AA = "aaaaa";
String ZZ = "zzzzz";

for (int i = 0; i <= 5; i++) {
    System.out.println(AA.substring(i) + ZZ.substring(5 - i));
}

---

Use one additional variable to keep position of a/z border. Increase value of that variable in each iteration.

---

You might try the following:

public class pattern2
{
    public static void main()
    {
        int i,j,k,num=0;
        for(i=1;i<=6;i++)
        {
            for(j=1;j<=num;j++)
            System.out.print("a");
            for(k=6;k>i;k--)
                System.out.print("z");
            System.out.println();
            num++;
        }
    }
}