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package org.javachannel; | |
import java.util.ArrayList; | |
import java.util.List; | |
import java.util.stream.IntStream; | |
public class LemonSparrowExample { | |
public static void main(String[] args) { | |
List<Integer> ids = new ArrayList<>(); | |
IntStream.range(0, 2300).forEach(ids::add); | |
List<List<Integer>> splitList = split(ids, 1000); | |
System.out.println("Number of lists: " + splitList.size()); | |
splitList.stream().forEach(l -> { | |
System.out.println("Size of sublist: " + l.size()); | |
}); | |
System.out.println("Size of original list: " + ids.size()); | |
for (List<Integer> aSplitList : splitList) { | |
for (int i = 0; i < 5; i++) { | |
System.out.println(aSplitList.get(i)); | |
} | |
} | |
} | |
private static List<List<Integer>> split(List<Integer> ids, int sizeOfList) { | |
List<Integer> tempList = new ArrayList<>(ids); | |
List<List<Integer>> returnedList = new ArrayList<>(); | |
while (tempList.size() > 0) { | |
int end = Math.min(sizeOfList, tempList.size()); | |
List<Integer> subList = tempList.subList(0, end); | |
returnedList.add(new ArrayList<>(subList)); | |
subList.clear(); | |
} | |
return returnedList; | |
} | |
} |
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