2d arraylist in java
int vertexCount = 3;
ArrayList<ArrayList<Integer>> graph = new ArrayList<>(vertexCount);
//Next, we'll initialize each element of ArrayList with another ArrayList:
for(int i=0; i < vertexCount; i++) {
graph.add(new ArrayList());
}creating a 2d arraylist in java
List<List<String>> listOfLists = new ArrayList<List<String>>(size);
for(int i=0; i<size; i++) {
listOfLists.add(new ArrayList<String>());
}Copyright © 2021 Codeinu
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