Convert a binary tree into a circular doubly linked list. The order of the elements in the linked list have to be the order of elements you get when you do an in order traversal of the binary tree.
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given an array of strings, find all the lists of anagrams present.
Not hard at all.
How will you make this code readable (given a piece of code)
Remove duplicates from a linked list. O(n) time.
Write a function to remove all redundant characters in a given string.
Write an algorithm that does an in-order traversal of a tree recursively. Now, write the same algorithm iteratively.
Write a minPeak function for a stack (function that returns the minimum element in the stack).
From a tree, get a List of a List of Integers where each List of Integers corresponds to all ints at depth i from the root.
Implement java's pow function
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