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);
but we need to explicitly mention staring and ending range of list. My problem is, we get a arraylist containing account numbers which is having data like 2000,4000 account numbers (there numbers will not be known during coding time), and I need to pass this acc nos into IN query of PL/SQL, as IN doesn't support more than 1000 values in it, I am trying to split into multiple chunks and sending it to query
Note: I cannot use any external libraries like Guava etc.. :( Any guide in this regard is appreciated.
Given an array of n non-negative integers. Choose three indices i.e. (0 <= index_1 <= index_ 2<= index_3 <= n) from the array to make four subsets such that the term sum(0, index_1) – sum(index_1, index_2) + sum(index_2, index_3) – sum(index_3, n) is maximum possible.
Method 1: Break a list into chunks of size N in Python using yield keyword. The yield keyword enables a function to come back where it left off when it is called again. This is the critical difference from a regular function.
This should give you all your parts :
int partitionSize = 1000; List<List<Integer>> partitions = new LinkedList<List<Integer>>(); for (int i = 0; i < originalList.size(); i += partitionSize) { partitions.add(originalList.subList(i, Math.min(i + partitionSize, originalList.size()))); }
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