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How to split array list into equal parts?

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攒了一身酷
攒了一身酷 2020-11-29 07:20

Is there anyway to split ArrayList into different parts without knowing size of it until runtime? I know there is a method called:

list.subList(a,b);
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  • 隐瞒了意图╮
    隐瞒了意图╮ (楼主)
    2020-11-29 08:13

    generic method for your help : 

    private static List> createBatch(List originalList,
        int chunkSize) {
    List> listOfChunks = new ArrayList>();
    for (int i = 0; i < originalList.size() / chunkSize; i++) {
        listOfChunks.add(originalList.subList(i * chunkSize, i * chunkSize
                + chunkSize));
    }
    if (originalList.size() % chunkSize != 0) {
        listOfChunks.add(originalList.subList(originalList.size()
                - originalList.size() % chunkSize, originalList.size()));
    }
    return listOfChunks;

    
    
             
    
                                                        
    
            
            
    
              
                
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