Sum of kth level

#1

cant get an idea to create a generic tree like how on giving input it fill null on both left and right child on one go…?

#2

@nikhilmeena
A generic tree is a tree where any node can have any number of children (unlike binary trees where a node can have atmost 2 children).

The first integer in each row indicates the data at the node whereas the second integer indicates the no of children that node has .

Refer to this code for the input function - https://ide.codingblocks.com/s/90995

As for the sample testcase given in the problem
1 2
2 2
3 0
4 0
5 2
6 0
7 0
2

Here the tree looks like

             1                                 Level 0
        /          \
      2              5                         Level 1
   /      \       /     \
  3       4      6        7                    Level 2