public static void main(String[] args) { int[][] a=new int[11][11]; a[1][2]=1; a[2][3]=2; for (int[] ints : a) { for (int anInt : ints) { System.out.print(anInt+"t"); } System.out.println(); } System.out.println("==============="); //获取有效值个数 int s=0; for (int i = 0; i < 11; i++) { for (int j = 0; j <11; j++) { if(a[i][j]!=0){ s++; } } } System.out.println("有效值个数为"+s); //创建一个稀疏数组 int[][] a1=new int[s+1][3]; a1[0][0]=11; a1[0][1]=11; a1[0][2]=s; int count=0; for (int i = 0; i < a.length; i++) { for (int j = 0; j < a[i].length; j++) { if(a[i][j]!=0) { count++; a1[count][0]=i; a1[count][1]=j; a1[count][2]=a[i][j]; } } } for (int[] ints : a1) { for (int anInt : ints) { System.out.print(anInt+"t"); } System.out.println(); } System.out.println("==============="); //读取稀疏数组 int[][] a2=new int[a1[0][0]][a1[0][1]]; for (int i = 1; i < a1.length; i++) { a2[a1[i][0]][a1[i][1]]=a1[i][2]; } for (int[] ints : a2) { for (int anInt : ints) { System.out.print(anInt+"t"); } System.out.println(); } }
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