Implement a queue class.
Intern Engineer Interview Questions
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How to reverse a string
Classic one from them: You have an array and you want to find the first non-repeating element.
If you have all the companies that are traded, and live inputs are coming of which company is being traded and what is the volume, how do you maintain the data, so that you can carry out operation of giving the top 10 most traded companies by volume of shares most efficiently.
Find the k-lowest elements of an unsorted array.
1) Write a function to find the nth Fibonacci number. 2) Optimize your code so that the numbers don't have to be recalculated on consecutive function calls.
How to optimize Dijkstra's algothrim
Reverse a linked list
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