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());
}2d list in python
ar = [[0 for j in range(m)] for i in range(n)]Copyright © 2021 Codeinu
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