PYTHON CODE HELP

#1

Issue with this code for same problem on leetcode as code template is not provided here

#2
#3 
"""
# Definition for a Node.
class Node:
    def __init__(self, x: int, next: 'Node' = None, random: 'Node' = None):
        self.val = int(x)
        self.next = next
        self.random = random
"""
class Solution:
    # @param head, a RandomListNode
    # @return a RandomListNode
    def copyRandomList(self, head):
        
        temp=head
        while temp:
            new_node=Node(temp.val)
            new_node.next=temp.next
            temp.next=new_node
            temp=new_node.next
        temp=head
        while temp:
            a=temp
            a_dash=a.next
            d=a.random
            d_dash=d.next
            a_dash.random=d_dash
            temp=temp.next.next
        
        new_head=head.next
        t,t_dash=head,head.next
        while t and t_dash:
            t.next=t_dash.next
            t_dash.next=t.next.next
        return new_head
#4

hey can u please elaborate on this

#5

@Kartikkhariwal1 ode not working.
Where did i went wrong ?

#6

Hey @ritvikagrawal1

"""
# Definition for a Node.
class Node:
    def __init__(self, x, next=None, random=None):
        self.val = int(x)
        self.next = next
        self.random = random
"""

class Solution:
    # @param head, a RandomListNode
    # @return a RandomListNode
    def copyRandomList(self, head):
        if(head==None): #added this
            return 
        temp=head
        while temp:
            new_node=Node(temp.val)
            new_node.next=temp.next
            temp.next=new_node
            temp=new_node.next
        temp=head
        while temp:
            a=temp
            a_dash=a.next
            d=a.random
            if(d!=None):  # added 
                d_dash=d.next
            else:  # added 
                d_dash=None  # added 
            a_dash.random=d_dash
            temp=temp.next.next
        new_head=head.next
        t,t_dash=head,head.next
        while t and t_dash:
            t.next=t_dash.next
            if(t_dash.next!=None): #added
                t_dash.next=t.next.next 
            else: #adde
                t_dash.next=None #added
            t=t.next #added
            t_dash=t_dash.next #added
        return new_head
#7

@Kartikkhariwal1 Got it. Thank You!

1 Like
#8

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