共计 418 个字符，预计需要花费 2 分钟才能阅读完成。
def get_num(arr):
def f(related_nodes):
g = set()
remain = []
for index_g in related_nodes:
if index_g[0] == index_g[1]:
continue
cur_set =set(index_g)
if not g:
g = cur_set
elif g and g&cur_set:
g = g|cur_set
else:
remain.append(index_g)
return g, remain
groups, remain_nodes = [], set(range(len(arr)))
remain = np.argwhere(arr==1).tolist()
while remain:
g, remain = f(remain)
groups.append(g)
remain_nodes -= g
# print(groups, remain_nodes)
return len(groups) + len(remain_nodes)正文完