class Reverse
{public static void main(String[] args)
{String s="adbtpljk";
System.out.println(reverseString(s));
}
public static String reverseString(String s)
{char[] chs=s.toCharArray();
reverse(chs);
return new String(chs);
}
private static void reverse(char[] arr)
{for(int start=0,end=arr.length-1;start<end;start++,end--)
swap(arr,start,end);
}
public static void swap(char[] arr,int x,int y)
{char temp=arr[x];
arr[x]=arr[y];
arr[y]=temp;
}
} |