array definition

Definition of one-dimensional array:
①: int a[];
a=new a[n];

②: int a[]=new int[n];

③: int a[]={1,2,3};

Definition of two-digit array:
①: int b[][];
b=new b[i][k];

②: int b[][]=new int[i][k];

③: int b[][]={{1,2},{2,3},{3,5}}; ——–>>int b[][]=new b[3][2];

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