Given a binary tree, print the average of each level.
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Find the two largest numbers in an array
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Given a log of users visit to a site for a day, how would you find returning users given the log visit for another day
There was only one question. How to compress a string? If "AAABBAAA" the resultant string should be 3A2B3A.
Using only putchar how would you print out the ascii values for each digit in an integer. For example if the integer was 123, then you would want to print the ascii values for 1, 2, and 3.
Given an infinite stream of numbers, find the top 50 integers. What's the data structure to use, and what's the time complexity.
Write a program to find the square root of a double.
Write a function to search for a string within another string. Analyze it's complexity, and propose optimizations.
You have words separated by white spaces. You need to reverse their order in place.
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