### Question:
Tensor_F64 extends Tensor<Tensor_F64> { @Override protected int innerArrayLength() { return d.length; } Tensor_F64( int... shape );  Tensor_F64(); double get( int ...coordinate ); double getAtIndex( int index ); @Override double getDouble(int ...coordinate); @Override Object getData(); @Override void setData(Object data); @Override Tensor_F64 create(int... shape); @Override void zero(); @Override Class getDataType(); public double d; }### Answer:
@Test public void getInnerLength() { Tensor_F64 T = new Tensor_F64(3,4,1); T.reshape(2,2); assertEquals(12,T.innerArrayLength()); }