how to create a 2d arraylist java

mash4t

Code: Java

2021-01-22 07:41:03

 int[][] arr = new int[m][n];

Ann

Code: Java

2021-02-15 06:14:34

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());
}

ferrar

Code: Java

2021-02-15 06:16:14

ArrayList<ArrayList<Object>> a = new ArrayList<ArrayList<Object>>();

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