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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Ideone {
  6.     public static void main (String[] args) throws java.lang.Exception {
  7.         List<String> initialCollection = new ArrayList<String>();
  8.         for(int i = 0; i < 31; i++) {
  9.             initialCollection.add("" + i);
  10.         }
  11.         List<List<String>> resultCollections = new ArrayList<>();
  12.  
  13.         int totalSize = initialCollection.size();
  14.         int parts = 5;
  15.         int baseSize = totalSize / parts;
  16.         int remainder = totalSize % parts;
  17.  
  18.         int startIndex = 0;
  19.         for (int i = 0; i < parts; i++) {
  20.             int endIndex = startIndex + baseSize + (i < remainder ? 1 : 0);
  21.             List<String> part = new ArrayList<>(initialCollection.subList(startIndex, endIndex));
  22.             resultCollections.add(part);
  23.             startIndex = endIndex;
  24.         }
  25.  
  26.         // Print the results
  27.         for (List<String> part : resultCollections) {
  28.             System.out.println(part.size() + ": " + part);
  29.         }
  30.     }
  31. }
Success #stdin #stdout 0.21s 57812KB
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stdin
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Standard input is empty
stdout
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7: [0, 1, 2, 3, 4, 5, 6]
6: [7, 8, 9, 10, 11, 12]
6: [13, 14, 15, 16, 17, 18]
6: [19, 20, 21, 22, 23, 24]
6: [25, 26, 27, 28, 29, 30]
https://ideone.com/hlqqtF
language:
Java (HotSpot 12)
created:
9 days ago
visibility:
public

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