two test case failing
Structurally identical
@ayush1213 your code will fail the cases where either of the tree is completely empty since you’re passing a “true” in the build function, your code cannot make an empty tree, and those cases will fail the test.
Instead of passing a true, just call the function and take the input inside the function, this will let you create empty trees as well.
Hope this helps.
@sgrarora3 sir i get it what you said but for root we are not taking any string so how to do it can u explain
From main, just call the add function and take the string input in the preorder function.
Take the example from the below code.
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