import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class StringReverseInPlace
{
	static char[] reverse(char[] name, int len) {
//	int l = name.length();
		int j,i = 0;
		char temp;
		for(i = 0, j = len; i < j; i++,j--) {
			temp = name[i];	//swapping
			name[i] = name[j];
			name[j] = temp;
			}
		return name;
	}
 
	public static void main (String[] args)
	{	
		String name = "prakash";
		System.out.println(reverse(name.toCharArray(), name.length()-1));
	}
}
 

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