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Create CloneLinkedListRandomPointer.py #4

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Create CloneLinkedListRandomPointer.py #4

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21 changes: 21 additions & 0 deletions CloneLinkedListRandomPointer.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,21 @@
class Solution:
def copyRandomList(self, head: 'Node') -> 'Node':
if not head:
return None
hash_map={}
temp=head
while temp:
hash_map[temp]=Node(temp.val)
temp=temp.next
temp=head
while temp:
if not temp.next:
hash_map[temp].next=None
else:
hash_map[temp].next=hash_map[temp.next]
if temp.random==None :
hash_map[temp].random=None
else:
hash_map[temp].random=hash_map[temp.random]
temp=temp.next
return hash_map[head]