## Vertical zig-zag traversal of a tree in JavaThe goal is to get the outcome of the items in the Vertical Zig-Zag traversal order given a Binary Tree. A tree's vertical zigzag traversal is described as follows: - List the first level's elements in the correct order from right to left; if no parts remain, move on to the next level.
- If there are no more elements in the last level, print them from left to right. If not, move on to the level before.
- While there are still nodes to navigate, follow the previous instructions.
The order of elements after traversing is: 21, 27, 23, 28, 22, 24, 26, 25
- The First step is to print elements for the first level will be printed as follows: 1.
- Currently, the remaining tree portion is given by
- Proceed to the fourth level print from the element that is farthest to the left, which is: 7.
- Now the tree transforms into:
- Now, as we are moving from the second level to the higher level, we should start at the rightmost position, making the element: 3.
- Now the tree transforms into:
- Proceed once more to the fourth level print from the last element on the left, which is element 8.
- Now the tree transforms into:
- Return to level 2 print now, starting with the element that is farthest to the right, which is 2. do thus until none of the elements have been traversed.
## Algorithm
## Implementation:
The order after traversing: 21 27 23 28 22 24 26 25
The time complexity is O(n) and the space complexity is O(n). |

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