Subgraph sampling output

[MortezaRamezani]

Similar to #94, the output of saint_subgraph has the same problem.

import torch
from torch_sparse import SparseTensor
import scipy.sparse as sp

dim = 2000
a = sp.rand(dim, dim, density=0.01, format='csr')
a = SparseTensor.from_scipy(a).type_as(torch.FloatTensor())

node_idx = torch.randint(0, dim, (100,))
sampled_adj, _ = a.saint_subgraph(node_idx)
sampled_adj.fill_diag(1) #Error

However when the node_idx is sorted, it's working fine.

node_idx, _ = torch.sort(node_idx)
sampled_adj, _ = a.saint_subgraph(node_idx)
sampled_adj.fill_diag(1)

[rusty1s]

Thanks for reporting. I will look into it.

[github-actions]

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