Thread: Substring function

Ok so i need to make a function that using the same things as the substing method.
Here the problem:
The substring command prompts the user for two integer indexes. It then replaces the result string with the set of characters in the result string that includes the character at the starting index up to the end index.

Constraint: We cant use the substring method in the Java String Class and we have to use a for loop to do this.

I have this so far.

public String substring(String result)
{
Scanner scan = new Scanner(System.in);
System.out.println("Enter inital> ");
int inital = scan.nextInt();
System.out.println("Enter end> ");
int end= scan.nextInt();
String[] c= new String[result.length()];///creates an array 
String newresult="";//makes a new string to hold the new result 
char letter = 0;
for(int i = 0; i<c.length; i++)//
	{
		letter=result.charAt(i);//gets the index of the chara
		c[i]=String.valueOf(letter);//get the chara of the index
		if(letter>=inital && letter<=end)//if any of the chara in the array equals the chara that is to replaced then
		{
				newresult+=c[i];//changes the chara
		}
 
	}
	return newresult;
}

It compiles but im not getting anything....

You don't have a main method. I don't know how you're going to get the initial string, but I'd imagine maybe reading it in from the user.

public static void main(String[] args)
{
	Scanner scan = new Scanner(System.in);
	System.out.println("Enter a string: ");
	System.out.println(substring(scan.nextLine()));
}