数组例题

public int[][] matrixMulti(int[][] a, int[][]b){
int[][] ans = new int[a.length][b[0].length];
if (a[0].length != b.length)
{
System.out.println("矩阵无法相乘！");
return ans;
}

//矩阵a是m*n，矩阵b是n*p的
for (int i=0;i<a.length ;i++ )   //i<m
{
for (int j=0;j<b[0].length ;j++ )    //j<p
{

for (int k=0;k<b.length ;k++ )    //k<n
{
ans[i][j] += a[i][k] * b[k][i];
}
}
}

return ans;
}