└── java substring comparisons


/java substring comparisons:
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 1 | import java.util.Scanner;
 2 | 
 3 | public class Solution {
 4 | 
 5 | public static String getSmallestAndLargest(String s, int k) {
 6 |     String smallest = "";
 7 |     String largest = "";
 8 | 
 9 |     java.util.Set<String> set = new java.util.HashSet<>();
10 |     for(int i = 0;i<= s.length()-k;i++){
11 |         set.add(s.substring(i,i+k));
12 | 
13 |     }
14 |     smallest = java.util.Collections.min(set);
15 |     largest = java.util.Collections.max(set);
16 |     return smallest + "\n" + largest;
17 | }
18 | 
19 | 
20 | public static void main(String[] args) {
21 |     Scanner scan = new Scanner(System.in);
22 |     String s = scan.next();
23 |     int k = scan.nextInt();
24 |     scan.close();
25 | 
26 |     System.out.println(getSmallestAndLargest(s, k));
27 | }
28 | }
29 | 


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