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());
}how to create a 2d arraylist java
ArrayList<ArrayList<Object>> a = new ArrayList<ArrayList<Object>>();Copyright © 2021 Codeinu
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