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/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) 
		String str="ankit", reverse="";
		//System.out.println("Enter The String: ");
		Scanner sc=new Scanner(System.in);
		str=sc.nextLine();
		int len=str.length();
		for(int i=len-1;i>=0;i--)
		{
			reverse+=str.charAt(i);
		}
		System.out.print(reverse);
 
	}
}

Main.java:10: error: ';' expected
	public static void main (String[] args) 
	                                       ^
Main.java:14: error: <identifier> expected
		str=sc.nextLine();
		   ^
Main.java:16: error: illegal start of type
		for(int i=len-1;i>=0;i--)
		^
Main.java:16: error: ')' expected
		for(int i=len-1;i>=0;i--)
		         ^
Main.java:16: error: <identifier> expected
		for(int i=len-1;i>=0;i--)
		             ^
Main.java:16: error: illegal start of type
		for(int i=len-1;i>=0;i--)
		              ^
Main.java:16: error: <identifier> expected
		for(int i=len-1;i>=0;i--)
		               ^
Main.java:16: error: ';' expected
		for(int i=len-1;i>=0;i--)
		                ^
Main.java:16: error: illegal start of type
		for(int i=len-1;i>=0;i--)
		                 ^
Main.java:16: error: <identifier> expected
		for(int i=len-1;i>=0;i--)
		                   ^
Main.java:16: error: <identifier> expected
		for(int i=len-1;i>=0;i--)
		                      ^
Main.java:16: error: illegal start of type
		for(int i=len-1;i>=0;i--)
		                        ^
Main.java:16: error: <identifier> expected
		for(int i=len-1;i>=0;i--)
		                         ^
Main.java:17: error: ';' expected
		{
		 ^
Main.java:18: error: illegal start of type
			reverse+=str.charAt(i);
			       ^
Main.java:18: error: ';' expected
			reverse+=str.charAt(i);
			            ^
Main.java:18: error: invalid method declaration; return type required
			reverse+=str.charAt(i);
			             ^
Main.java:18: error: <identifier> expected
			reverse+=str.charAt(i);
			                     ^
Main.java:20: error: class, interface, or enum expected
		System.out.print(reverse);
		^
Main.java:22: error: class, interface, or enum expected
	}
	^
20 errors

Standard output is empty