public static void foo3(String s)
{
if (s.length() >0)
{
System.out.print(s.charAt(s.length() -1));
foo3(s.substring(0, s.length() -1));
}
}
What is the output of: foo3(“”);
Using the code in #1, What is the output of foo3(“Hi”)?
Fill in the missing code:
This recursive method returns “even” if the length of a give String is even, and “odd” if the length of the String is odd.
public static String foo(String s)
{
if (s.length() ==0)
return “even”;
else if (s.length() = = 1)
return “odd”;
else
//your code goes here
}
You coded the following in the file Test.java :
System.out.println( foo(5));
//more code here
public static int foo(int n) //line 9
{
if (n = = 0)
return 1;
else
System.out.println(n* foo(n-1) );
} //line 15
At compile time, you get the following error:
Text.java: 15: missing return statement
} //line 15
^
1 error
Explain what the problem is and how to fix it.