Given a stream of integers of unknown (possibly large) length, how would you pick one at random? Now prove its random.
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Find the maximum difference in an unsorted array with the index of max greater than min. array cant be sorted
Given an array like [-1, 2, 3, 5, 4, 6] and it should print the 3 that is order of the array is equal to array element
Given a function for a fair coin, write a function for a biased coin that returns heads 1/n times (n is a param).
The first one is, given a tree, each node contains a digit. Calculate the sum of all numbers formed by paths from root to leaf. The second one is given a string, remove all 'b's and duplicate all 'a's.
Having an infinite supply of water and two containers, one for 3 liters and one for 5 liters, how would you measure 4 liters?
How would you find the pairs of numbers that added to some specific number in an array.
Find all anagrams in a file. Improve the running time to O(n).
Write an algorithm to see if a tree is a BST.
My 30 min coding question was related to tree where all nodes were managers each node has a value which was the number of months they worked.We have to find the maximum tenure which is I remember can be calculated using the average of its child nodes.
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