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  1. import java.util.ArrayList;
  2. import java.util.Collections;
  3. import java.util.List;
  4.  
  5. class Test {
  6.     String arr[] = {"hei", "hvordan", "gaar", "det", "med", "deg", "a"};
  7.  
  8.     /**
  9.      * Use composition.
  10.      */
  11.     class MyComparableString implements Comparable<MyComparableString> {
  12.         String myString;
  13.  
  14.         MyComparableString(String s) {
  15.             myString = s;
  16.         }
  17.  
  18.         @Override
  19.         public int compareTo(MyComparableString other) {
  20.             // Compare the lengths of the strings in this and other.
  21.             Integer l1 = myString.length();
  22.             Integer l2 = other.myString.length();
  23.             return l1.compareTo(l2);
  24.         }
  25.  
  26.         // String representation.
  27.         public String toString() {
  28.             return myString;
  29.         }
  30.     }
  31.  
  32.     void go() {
  33.         // Convert the String array into a List (Collection) of MyComparableString.
  34.         List<MyComparableString> l = new ArrayList<>();
  35.         for (String s: arr) {
  36.             l.add(new MyComparableString(s));
  37.         }
  38.         // Print longest and shortest.
  39.         System.out.println("Shortest: " + Collections.min(l));
  40.         System.out.println("Longest: " + Collections.max(l));
  41.     }
  42.  
  43.     public static void main(String[] args) {
  44.         new Test().go();
  45.     }
  46. }
Success #stdin #stdout 0.11s 320576KB
comments (?)
stdin 
Standard input is empty
stdout 
Shortest: a
Longest: hvordan
https://ideone.com/S29CtU
language:
Java (12.0.1)
created:
9 years ago
visibility:
public

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