different between array and heap
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Find the least common ancestor of 3+ nodes, in a binary tree wher the nodes only point to their parents. No child pointers.
Given an array and a sum, determine if any of the items add up to sum. Do a linear space solution and constant time solution.
in an array of characters find the character that is repeated the most
Write production quality code to find whether a given binary tree is a BST or not. You can't make any global variable.
Consider a simple array. What is the time complexity to insert, search, delete an element?
Given an array of integers [1,2,3,4]. and target t = 5. Come up with a solution that will print out all the unique pairs in the array that are equal t.
Find the angle between the hour hand and the minute hand on a clock given the hour, minute and second.
Write a program to reverse the words in a string in place. for eg; " I am sam " --> " sam am I "
Difference between an array and a linked list
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