Find the dot product of two arrays knowing that >80% of the values are 0's (needs to be faster than one for loop O(n)).
Software Engineer Internship Interview Questions
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How do you print two binary search trees inorder?
Something about an alien dictionary that I had to find the correct sorting of the letters.
You are given two integers A and B. Using +, -, or no operator, find how many combinations of A result in B. Say A is 12345 and B is 168: 123+45 = 168, so that counts as a solution, but 123-45 does not.
I was asked to combine the elements of two binary trees into one
Given a set of numbers, verify that a contingent sum exists that is equal to the input number.
How would you code a binary tree?
Write a function that returns false if attempting to add a new meeting that overlaps with an already existing meeting. Meetings are defined by a start time and end time.
find the palindrome string in a list
Find the least common ancestor in a tree
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