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();
}
}
