Added get_strides_vector and get_shape_vector

Author: ndgrigorian

dpctl/apis/include/dpctl4pybind11.hpp

@@ -856,6 +856,16 @@ class usm_ndarray : public py::object
         return api.UsmNDArray_GetShape_(raw_ar);
     }
 
+    const std::vector<py::ssize_t> get_shape_vector() const
+    {
+        auto raw_sh = this->get_shape_raw();
+        auto nd = this->get_ndim();
+
+        std::vector<py::ssize_t>
+            shape_vector(raw_sh, raw_sh + nd);
+        return shape_vector;
+    }
+
     py::ssize_t get_shape(int i) const
     {
         auto shape_ptr = get_shape_raw();
@@ -870,6 +880,39 @@ class usm_ndarray : public py::object
         return api.UsmNDArray_GetStrides_(raw_ar);
     }
 
+    const std::vector<py::ssize_t> get_strides_vector() const
+    {
+        auto raw_st = this->get_strides_raw();
+        auto nd = this->get_ndim();
+
+        if (raw_st == nullptr) {
+            auto is_c_contig = this->is_c_contiguous();
+            auto is_f_contig = this->is_f_contiguous();
+            auto raw_sh = this->get_shape_raw();
+            if (is_c_contig) {
+                const auto &contig_strides =
+                    c_contiguous_strides(nd, raw_sh);
+                return contig_strides;
+            }
+            else if (is_f_contig) {
+                const auto &contig_strides =
+                    f_contiguous_strides(nd, raw_sh);
+                return contig_strides;
+            }
+            else {
+                throw std::runtime_error(
+                    "Invalid array encountered when "
+                    "building strides"
+                );
+            }
+        }
+        else {
+            std::vector<py::ssize_t>
+                st_vec(raw_st, raw_st + nd);
+            return st_vec;
+        }
+    }
+
     py::ssize_t get_size() const
     {
         PyUSMArrayObject *raw_ar = this->usm_array_ptr();