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Lexi.java
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Lexi.java
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import java.io.*;
import java.util.*;
public class Lexi {
public static void main() {
Scanner sc=new Scanner(System.in);
String s=sc.nextLine();
String a[]=new String[s.length()];
int y=sc.nextInt();
int i, j;
String w="";
int x=0;
for(i=0; i<=s.length()-y; i++)
{
w=s.substring(i,i+y);
a[x++]=w;
w="";
}
x=0;
for(i=0; i<a.length; i++)
{
if(a[i]!=null)
x++;
}
String f[]=new String[x];
int c=0;
for(i=0; i<x; i++)
{
if(a[i]!=null)
f[c++]=a[i];
}
String t="";
for(i=0; i<f.length-1; i++)
{
for(j=0; j<f.length-1-i; j++)
{
if(f[j].compareTo(f[j+1])>0)
t=f[j];
f[j]=f[j+1];
f[j+1]=t;
}
}
System.out.println(f[0]);
System.out.println(f[f.length-1]);
}
}