[sravan18]

HI! guys could anyone help me how do I print a reversed string using char array I mean I tried to convert a string to char array and I was trying to convert again that char array into a string but I am not able to do it. Below is the code which i tried

public class ArrayStrings {



String a;
int temp=0;
public void methodA(String a)
{


this.a=a;

char [] x= a.toCharArray();
System.out.println("the char of string is:");
for(int i=x.length-1;i>=0;i--)
{
System.out.println("the reverse order of string is:"+x[i]);
char [] b = {x[i]};

String str = new String(b);
System.out.println("the string is" +str);


}





}


public static void main(String[] args)
{
ArrayStrings res = new ArrayStrings();
res.methodA("hello");


}
}

[bullet]

This line

char [] b = {x[i]};

make b a one character array.

[sravan18]

i did not understand what you said could you explain it clearly

[bullet]

Originally Posted by sravan18

i did not understand what you said could you explain it clearly

I mean that in that one line of code, all you are doing is creating a one element array. Each time that line is executed, you create a new array whose one element is the element at index i in the array x.

[doa24uk]

Originally Posted by bullet

I mean that in that one line of code, all you are doing is creating a one element array. Each time that line is executed, you create a new array whose one element is the element at index i in the array x.

Do you HAVE to use an array?

Maybe use a StringBuilder? You're nearly there. Count backwards through the String getting each character & adding it to the new string.

Here's an example I knocked up with a StringBuilder.

 
    String strNormal = "Hello";
       StringBuilder oBuilder = new StringBuilder();
       // Get length of string
       int iStringLength = strNormal.length()-1; // -1 because characters in String are 0 referenced.
       
       // Count backwards through the string
       while (iStringLength >= 0)
       {
           oBuilder.append(strNormal.charAt(iStringLength));
           iStringLength--;
       }
       
       System.out.println("Reversed String (expecting - olleH): " + oBuilder.toString());

You could also count forwards through the string and add to the string builder at position zero each time... but in terms of readability I think counting backwards is better because it follows the logic of what you're trying to achieve.