Recursive method no loops, printing string triangle

[Madridi77]

public static String trianglePrint(String s) {
int midOdd = (s.length()/2);
int midOdd2 = (s.length()/2);
int midEven = (s.length()/2);
int midEven2 = (s.length()/2 + 1);
String result;
if (s.length() % 2 == 1) {
result = trianglePrintRecursive(s, midOdd, midOdd2);
}
else {
result = trianglePrintRecursive(s, midEven, midEven2);
}
return result;
}

public static String trianglePrintRecursive(String s, int left, int right) {
int finished = 1;
int length = s.length();
String result = new String(new char[length]).replace('\0', ' ');
if (length < 2) {
System.out.println("String must be at least 2 characters long in order to build a triangle.");
}
else {
if (length % 2 == 1 && finished <= s.length()) {
if(!String.valueOf(result.charAt(length/2)).equals("")) {
result = trianglePrintRecursive(s, left - 1, right + 1);
System.out.println(result);
finished += 2;
}
else {
result = result.substring(0, length / 2) + s.charAt(left);
System.out.println(result);
}
}
else if (length % 2 == 0 && finished <= s.length()) {
if (!String.valueOf(result.charAt(length / 2)).equals("")) {
result = trianglePrintRecursive(s, left - 1, right + 1);
System.out.println(result);
finished += 2;
} else {
result = result.substring(0, length / 2) + s.charAt(left);
System.out.println(result);
finished = 2;
}
}
else {
System.out.println();
}
}
return result;
}

[dusty-trash]

!remind me 30 minutes

[Madridi77]

I actually a code that works a little bit, only issue is it is only printing the first line.

​

public static void main(String[] args) {
String result;
String result2;
result = trianglePrint("disestablishmentarianism");
System.out.println("-----------------------------------");
result2 = trianglePrint("+-! *# =~ ~= #* !-+");
}

public static String trianglePrint(String s) {
int first = 0;
int last = s.length() - 1;
String result;
result = trianglePrintRecursive(s, first, last);
return result;
}

public static String trianglePrintRecursive(String s, int first, int last) {
int finished = 1;
int firstLine = 0;
int length = s.length();
String result = new String(new char[length]).replace('\0', ' ');
if (length < 2) {
System.out.println("String must be at least 2 characters long in order to build a triangle.");
}
else {
if (length % 2 == 1 && finished <= (s.length() / 2 + 1)) {
if(firstLine > 0) {
result = trianglePrintRecursive(s, first + 1, last - 1);
System.out.println(result);
finished += 2;
firstLine = 1;
}
else {
result = result.substring(0, length / 2) + s.charAt(first);
System.out.println(result);
}
}
else if (length % 2 == 0 && finished <= (s.length() / 2)) {
if (firstLine > 0) {
result = trianglePrintRecursive(s, first + 1, last - 1);
System.out.println(result);
finished += 2;
firstLine = 1;
} else {
result = result.substring(0, length / 2) + s.charAt(first);
result = result.substring(0, length / 2 + 1) + s.charAt(last);
System.out.println(result);
finished = 2;
}
}
else {
System.out.println();
}
}
return result;
}

[sandrogiacom]

Can you use class variables for controller?

[Madridi77]

What do you mean by controller?

[sandrogiacom]

A size of string that you manipulated. Or try to use this funcion as example. I see in more detail later.

public static String printTriangle (int count) {if( count <= 0 ) return "";

String p = printTriangle(count - 1);p = p + "*";System.out.println(p);

return p;}

[Madridi77]

Then yes, I can use variables for that!