CommVault Interview Experience | Coding round for SDE

Commvault visited  our campus for SDE . First round was coding round .in this round they gave 5 question.

Round 1: 

1. Print the binary search tree in zig zag way.
2. Swap two node in given link list.
3. Find the sum of the just smallest element of the   array if their is not smallest element exist before the given element then take 0.
4. Write a code to form the largest number by permutation of the given number and print all number which is greater.
5. Can’t remember.