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Given two integers ‘n’ and ‘sum’, find count of all n digit numbers with sum of digits as ‘sum’. Leading 0’s are not counted as digits. Print your output % 10^9+7.
https://practice.geeksforgeeks.org/…/count-of-n-digit-num…/0
You are given a Linked List with N nodes with M nodes having random pointers pointing to any other node consisting of two pointers in each node, with one pointer of each node pointing to the next node just like in a single linked list and the second pointer which is arbitary pointer can point to any node in the list and not just the previous node.
https://practice.geeksforgeeks.org/…/clone-a-linked-list-…/1
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